Don't think about losing fat or gaining muscle yet. If you want to be strong, you should exercise first, and the problem will be solved. Daughter 170, weighing only 88 kg. She went to martial arts school to study Sanda for two semesters (two months in summer vacation), and now she weighs 106 kg. I can't see how fat I am, but my body is strong and my constitution is not as bad as before. The effect is good, you can try it.