Gynexin is excellent at chest fat reduction however if your chest fat is more to do with diet, then just taking gynexin and not doing exercises, will slow down your progess in getting rid of man boobs.

Gynecomastia is a accumulation of fat in the chest area, this may be caused by excess weight or hormonal issues. The chest is  one of the main spots for fat storage in men along with the stomach area. By performing daily gynecomastia exercises it is very easy to get rid of man boobs.
Start by looking at what you are eating, and make sure that these are both the right foods and the right amounts for your body type.
Hence,make sure that your diet is just about 15% fat 50% carbs and finally 50% protein,fish is good source of meat as it’s generally low in fat and rich in protein. Obviously aerobic exercise on its own is not probably enough to loose your man boobs you need to tone as well this is best done, with weight training.
As I said earlier the best way to lose man boobs is through regular exercise, as a rough guide you should aim to do at least an hours exercise for 60 minutes five times a week
One of the best types of exercise is aerobic exercise but do not worry you do not have to join a gym if you do not want to, tennis, football, cycling and gentle jogging all can get that heart rate up and begin burning chest fat.

One of the good gynecomastia exercises is doing incline bench presses, which will also assist in tightening your pectoral muscles. Or do a standard bench press, decline bench press or the  lat pull downs.