Will I lose weight if I exercise 5 hours a day?

try it and see and then you'll know

Youll still be a pig :)))

Exercise may help but you can't lose enough weight if you just depend on exercise. Weight gain is a dietary problem. You gain weight because you eat too much so to lose weight, you lessen what you eat. 

Eventually best of luck 

You'll lose more by cutting a 1000 calories out of your diet each day. Working out is a really really small part of weight loss.