On average man burns ca. 2500 kcal per day, mostly in rest. One hour of reasonably intensive cardio burns 500~600 kcal. If you have two such workouts a week it comes down to an increased energy use of 2*600/(7*2500) = 7%. Or a large meal. Just looking at the numbers it seems spending some time at the gym is not going to do much for loosing weight. Or said differently: eating 7% less is easier.
Of course cardio and strength training are useful for building/preserving muscle mass and general fitness. But for weight loss looking at food seems more effective.
Of course cardio and strength training are useful for building/preserving muscle mass and general fitness. But for weight loss looking at food seems more effective.