The largest muscles (and therefore the largest calorie burners) are in the thighs, abdomen, chest, and arms.

What body part loses fat the fastest?

Generally weight loss is most noticeable early on in areas where there is little fat, such as the clavicles. Women tend to lose weight all over, and experience fat loss first in their belly, breasts, and arms. Generally the last area they lose weight is from their lower body (hips and thighs).

Which exercises burn the most fat?

The bottom line. Running is the winner for most calories burned per hour. Stationary bicycling, jogging, and swimming are excellent options as well. HIIT exercises are also great for burning calories.