Does lifting weights help you lose fat?

The verdict

Yes, and it is the most important training habit on the board. Muscle is the engine.

Resistance training is the single biggest lever for keeping muscle while losing fat. Strong evidence.

Cardio burns calories during the workout. Lifting changes what your weight loss is made of. In a calorie deficit without resistance training, a big chunk of what you lose is muscle, which drops your resting burn rate and sets up the rebound. Lift two or three times a week and the loss comes overwhelmingly from fat instead.

This matters double for anyone on a GLP-1 medication, where studies estimate up to half the loss can be lean mass unless you train against it.

Do this instead

Two full-body sessions a week is the minimum effective dose. Three is better. Seven is not required.
Compound basics beat complicated programs: squat, hinge, push, pull, carry.
No gym needed to start: bodyweight and a pair of dumbbells cover months of progress.

This is one of 30 habits we grade.

Find out your full Body Grade in about 4 minutes, and the ONE habit holding you back the most.

Get graded free

More verdicts

GradeMyHabits grades everyday habits against published research. It is not medical advice. Talk to your doctor before changing medication, fasting beyond a day, or starting an intense program with a health condition.