To banish side boob fat, trim your overall body fat through exercise and healthy eating. Image Credit: valentinrussanov/E+/GettyImages. If you're. Man boobs are caused by excess fat storage in the chest area, or as a result of a condition known as gynecomastia, which is a hormonal imbalance. in your chest, don't worry. Here are the best exercises to get rid of man boobs. Simply stand with your feet together, hands at your sides. Jump your feet out. The number one way to get rid of man boobs is to shed fat. chest (sternum), squeeze for two seconds, then slowly bring your hands back down to your sides.