Can you guys tell me how can 15 year old male lose weight?

Old Fashioned Ways: Multiple studies have shown that the same, "good old" fashioned ways work best. The key is to reinforce that change is slow and will be most successful in the long-term if done in a sustainable manner. So no get thin quick schemes!. Fda rdi recs, exercise daily (30 min cardio 3 times/week.. Ideally more), and get rest. It's hard work but will pay off as much as they put in.