never had to do it...........

if you're doing boxing training (assumed) simply reducing your carbs will most likely make you drop pretty quick, though I dont recommend it

For cutting my weight i use simple diet food like vegetables and fruits.i do running for 30 minutes regularly and i avoid fast food.With these tools i have reduced so much weight.

Cutting weight (dehydrating, cleansing, etc) or losing weight (fat loss)?

Key to losing weight is your food IMO.