Why skin is etching on testicle and surroundings?

How to loose weight?

When you use the gym, you work hard and sweat. If your underpants are not suitable for sweating, you could get a lot of itching.

Best way to lose weight is to lift weights, particularly the squat, bench press and deadlift.

Also do intense cardio. Run, or cycle, or row, or spar so that you are panting and sweating and aware that you are working hard.