> vigorous weightlifting for 1 hour may burn up to 440 calories
nah, you still have to eat like a bird.
nah, you still have to eat like a bird.
You have to eat more to lift more.
Doesn't mean you have to go full NFL Combine mode and eat 7000+ calories/day. But 1800 cals/day won't cut it (unless you are trying to cut weight, wherein progress will stall for a while).