“Brain-derived neurotrophic factor (BDNF), a major brain protein, is decreased, which may lead to an increased chance of depression,” Weiss says. “Dopamine levels drop, which may stimulate anxiety, depression and other mood/behavior shifts, as well as cause a sense of tiredness and fatigue that reduces the impetus to exercise.”
In other words, the less you exercise, the less you want to exercise. You’ll find it hard to motivate yourself to work out, and if you try, you’ll be more easily winded, and basic exercises will require more energy. That’s how two sedentary weeks turn into three or four, and your physical health really tumbles off a cliff.
Two months: Things are getting flabby
Now is when you’ll start looking like the “Before” picture in a diet supplement advertisement. “After six to eight weeks, the fat mass can get greater than lean mass, causing the waistline to get bigger,” according to Weiss. Only two months! “Men usually get the increase in fat in the abdomen, while women add more mass in the lower body.”