Question about newbie gains. Is the noobie gains a once in a lifetime honeymoon period? What does the current available evidence say about newbie gains. I know that most newbies can still gain some muscle mass and almost everyone will gain strength even on a caloric deficit, but will an obese person lose out on some potential muscle mass gain if he starts out his fitness journey on a caloric deficit instead of eating at a slight surplus or maintenance when he starts out.
I understand that he need to lose fast because of health reasons, but keeping that aside, will he lose out on newbie gains if he starts on a calorie deficit instead of gaining some muscles