Weightlifting

How weightlifting burns calories

Lifting weights raises your heart rate and oxygen demand through repeated muscular effort, especially during sets with short rest periods. The energy cost isn't just in the lift itself — your body keeps burning at an elevated rate during the rest between sets while it clears metabolic byproducts.

At 6.0 MET, a steady weight session burns calories at the same rate the formula assigns to jogging, even though the two feel completely different.

What changes the real number

• Rest periods: short rests (30-60 seconds) keep your heart rate elevated and raise the session's average burn rate; long rests bring it back toward baseline
• Compound vs isolation lifts: squats, deadlifts, and presses recruit more total muscle than curls or extensions
• Rep tempo: slower, controlled reps extend time under tension and can raise the energy cost of a set
• Training split: a full-body session burns more per hour than a single muscle-group day at the same intensity

Technique notes

• Prioritize compound lifts (squat, deadlift, bench, row) before isolation work — they recruit more muscle for the same time invested
• Keep rest periods intentional rather than scrolling your phone between sets
• Control the eccentric (lowering) phase of each lift instead of dropping the weight — it's where a lot of the muscular work happens
• Track working sets, not just total time in the gym — ten focused sets burn more than thirty minutes of wandering between machines

How it compares