What is resistance training?

Picture resistance training and you probably see a gym: racks of weights, rows of machines and people who seem to know exactly what they're doing. That picture keeps a lot of people away. In 2020, only 24.2 percent of US adults met the guidelines for both aerobic and muscle-strengthening activity, according to the CDC's National Center for Health Statistics.

If you've avoided strength training because the gym felt like someone else's world, or started a program and drifted away after a few weeks, you're far from alone, and a simpler plan usually fixes it. Your muscles respond to effort against a load, and a pair of dumbbells, a band or your own body weight on a living room floor can supply that load.

This page explains what resistance training is and how it differs from strength training, the four main types, which exercises count, what it does for strength, muscle, bones and metabolic health, how much you need and a beginner workout you can do at home.

Resistance Training, Defined

Resistance training means making a muscle contract against a force that resists it. The force can be your own body weight, as in a push-up or a squat, or an external load such as a dumbbell, a kettlebell, a resistance band, a cable or a machine. Activity guidelines call it muscle-strengthening activity. The CDC's guidelines for adults ask for it on at least 2 days a week, working all the major muscle groups: legs, hips, back, abdomen, chest, shoulders and arms.

Two things turn an exercise into effective resistance training. The load has to be heavy enough that each set gets genuinely hard, and it has to grow as you get stronger. That second rule is called progressive overload, and it's why the same 10 squats that challenge you in week one do much less by week eight.

Is resistance training the same as strength training?

Yes, in everyday use. Resistance training, strength training and weight training all describe muscles working against a load, and the guidelines group them as muscle-strengthening activity. Coaches sometimes use strength training more narrowly, for heavy, low-rep work aimed at lifting the most weight, and weight training only when the load is weights. Bodyweight and band workouts are resistance training too.

How resistance training makes you stronger

Your strength rises before your muscles visibly grow. In a study by Seynnes, de Boer and Narici (2007), seven young adults trained their thighs on a leg extension device three times a week. Their strength rose 39 percent in 35 days, while quadriceps size grew by 6.5 to 7.4 percent. Much of the early gain comes from your nervous system learning to use more of the muscle you already have. Muscle growth, called hypertrophy, starts sooner than most people think: in that study it was already measurable after 20 days.

Types of Resistance Training

Resistance training comes in four main types, sorted by what supplies the load. They differ in cost, space and how easy they are to make harder, and all of them build strength when the sets are hard enough.

The type matters less than the effort. Kikuchi and Nakazato (2017) had 18 young men train twice a week for 8 weeks with either bench presses at 40 percent of their one-rep max or push-ups adjusted to the same load. Chest muscle thickness grew from 17.0 to 20.8 mm in both groups, and bench press strength rose by similar amounts. Our resistance band training research review covers the trials that found bands build strength about as well as weights.

Training for strength, muscle size or endurance

You can point resistance training at different goals by changing the load and the number of reps. Heavy loads for few reps build the most maximal strength. For muscle size, the load matters less than how close each set gets to failure: in a meta-analysis of 21 studies with every set taken to failure, Schoenfeld and colleagues (2017) found that loads at or below 60 percent of the one-rep max grew muscle about as much as heavier ones, though the heavier loads won for strength. Light loads for many reps build muscular endurance. Our explainer of the ACSM 2026 resistance training guidelines turns these goals into sets, loads and weekly volumes.

What Exercises Count as Resistance Training?

Any exercise that makes a muscle work against a load counts as resistance training, including bodyweight moves like push-ups and squats, dumbbell and kettlebell lifts, resistance band exercises and gym machines. A balanced routine covers six movement patterns. Here are examples of resistance training for each, with versions you can do at home:

1. Squat. Bodyweight squats, or goblet squats holding one dumbbell at your chest.
2. Lunge. Reverse lunges, split squats and step-ups onto a sturdy step.
3. Hip hinge. Glute bridges, or Romanian deadlifts with a pair of dumbbells.
4. Push. Push-ups, with your hands on a bench to make them easier, plus dumbbell floor presses and shoulder presses.
5. Pull. One-arm dumbbell rows, band pull-aparts and band rows with the band anchored in a door.
6. Carry and core. Farmer's carries with two dumbbells, planks, side planks and dead bugs.

Five exercises that cover the whole body between them are the goblet squat, the dumbbell row, the push-up, the dumbbell Romanian deadlift and the plank. Yoga and Pilates can count as well when the holds are demanding, and our article on whether Pilates is strength training covers where it fits.

Resistance Training Benefits: What It Does for Your Body

Resistance training makes you stronger, adds or protects muscle, helps keep bones dense, improves blood sugar control and body composition, and is linked to a longer life. Here's what the research shows for each.

Strength, at any age

Strength responds to training at every age, even when it has been lost. In a classic study by Fiatarone and colleagues (1990), ten frail, institutionalized adults with an average age of 90 did 8 weeks of high-intensity strength training. The nine who finished gained an average of 174 percent in strength, their mid-thigh muscle area grew 9 percent, and their speed walking heel to toe improved by 48 percent.

More muscle and a slightly faster metabolism

Muscle doesn't take care of itself. In a review of the health effects of strength training, Westcott (2012) puts the loss at 3 to 8 percent of muscle mass per decade in inactive adults, and reports that 10 weeks of resistance training may add about 1.4 kg of lean weight, raise resting metabolic rate by about 7 percent and cut about 1.8 kg of fat. Those figures are averages from a review, and your own results will depend on your starting point, your effort and how much you eat.

Can resistance training improve bone density?

Yes, when the load is high enough. In the LIFTMOR trial, Watson and colleagues (2018) randomized 101 postmenopausal women with low bone mass, average age 65, to supervised high-intensity resistance and impact training or a low-intensity home program for 8 months. The lifting group did 5 sets of 5 reps at above 85 percent of their one-rep max in two 30-minute sessions a week. Lumbar spine bone density rose 2.9 percent in that group and fell 1.2 percent in the home group, and at the femoral neck it held steady (up 0.3 percent) while the home group lost 1.9 percent. The only reported adverse event was one minor back spasm.

That program used heavy, supervised lifts, which most people can't copy at home. Our guide to bone density exercises at home covers the jumping and progressive dumbbell and band work that loads bone without a gym.

Better blood sugar control and body composition

Resistance training also helps your blood sugar control. In a meta-analysis of trials in people with type 2 diabetes, Umpierre and colleagues (2011) found that structured resistance training lowered HbA1c, the 3-month average of blood sugar, by 0.57 percentage points, close to the 0.73 from aerobic training. In healthy adults, a meta-analysis of 54 trials by Wewege and colleagues (2022) found that full-body resistance training cut body fat by 1.46 percentage points and fat mass by 0.55 kg compared with no exercise, and reduced visceral fat, the fat stored around the organs.

A longer life

In a meta-analysis of 16 cohort studies, Momma and colleagues (2022) linked muscle-strengthening activity to a 10 to 17 percent lower risk of early death, cardiovascular disease, total cancer, diabetes and lung cancer. Doing both strength and aerobic exercise went with lower risk than doing neither. These are observational data, so they show an association rather than proof, and our review of resistance training and mortality covers the dose-response curve in detail.

How Much Resistance Training Do You Need?

Adults need resistance training on at least 2 days a week, working all the major muscle groups, according to the CDC's guidelines, alongside 150 minutes of moderate aerobic activity or 75 minutes of vigorous activity. In Momma's meta-analysis, the lowest risk of early death, heart disease and cancer came at about 30 to 60 minutes of muscle-strengthening activity a week, and the lower diabetes risk kept growing up to 60 minutes. That works out to two or three sessions of 20 to 30 minutes.

For the aerobic half, short interval sessions are one time-efficient option, and our page on what HIIT is explains how they work and how often to do them.

How to Start Resistance Training at Home

Start with two full-body sessions a week on days that aren't back to back, and add a third once the first two feel routine. A full-body session trains every major muscle group each time, which suits two or three sessions a week better than a split routine. Choose a load or variation you can lift for the target reps with good form, and finish most sets with two or three good reps still in you.

A beginner full-body workout with dumbbells, a band and body weight

This session takes about 30 minutes with a short warm-up. Do the exercises in order and rest about a minute or two between sets.

Warm up for 5 minutes first: march in place, then do a light set of squats, rows and push-ups. Lower each rep under control and breathe out as you push or pull, rather than holding your breath. Stop any exercise that causes sharp pain, and swap it for the easier version.

How to progress

When you can do the top of the rep range on every set with good form, make that exercise a little harder the next time. At home you can add a rep or two, add a third set, pick up a heavier dumbbell or a thicker band, slow the lowering to 3 seconds or move to a harder variation. Change one thing at a time. If you'd like to train with heavier dumbbells or in a gym, our guide on how to start lifting weights covers choosing your first weights and your first two weeks, session by session.

What This Means for You

Resistance training is any exercise that makes your muscles work against a load, and it doesn't require a gym. A push-up on your living room floor counts. So does a goblet squat with one dumbbell or a row with a band looped around a door handle. Two sessions a week covers the guideline, and the research shows the benefits arrive at any age.

Picture two months from now: you carry the shopping up the stairs in one trip, you've added weight or reps to every exercise, and two 30-minute sessions are simply part of your week. The hard part is showing up long enough for the changes to add up. A personalized training program can take the planning off your hands. In FitCraft, a 3D AI coach demonstrates each exercise, from dumbbell rows to band pull-aparts, on an interactive model you can zoom in on, says your name during the workout and adapts your workouts as you progress, while streaks and calendar rewards keep you coming back. As one FitCraft user, Stacy, put it: "After my second kid, I needed something stupidly simple."