1 Exercise Calorie Calculator: Enter your weight and minutes spent exercising in a variety of physical activities at moderate intensity.  Walking Calorie Calculator: find out how many calories you can burn per mile based on your weight and speed. Walking burns approximately 100 calories per mile for a 150 pound person.
(i) To get rid of dead skin cells (they cause dark underarms) and dark armpits, rub a lemon wedge on the skin for a few minutes before you go for a bath. For a powerful exfoliation, sprinkle a little sugar on the lemon wedge and then use it.
Undoubtedly you are male and well-endowed..with apocrine glands in that part of your anatomy. Your armpits may smell skunky even if you recently had a shower. The only remedy is an effective under-arm deodorant, probably a stick, and don't hesitate to use it 2 to 3 times per day if needed. Change your shirt and/or undershirt at least daily, especially in warm weather. Also you may want to trim your armpit hair (not shave, that'd be too girly).