Exercising is absolutely necessary, since being diagnosed with mosaic Klinefelter syndrome at 38 years old. I have lost 30lbs, drop 12” on my waist and have increased my strength phenomenally through CrossFit for 2 years. However, I did plateau and switched to Orange Theory. Make sure you move daily even it is just hitting your 10k steps. All of this is with taking testosterone therapy. Learn to manage your food intake, staying at a deficit. Always drink plenty of water and maintain your mental health.