I have this problem - I eat between 1300 and 1600 cals per day focusing on protein and restricted fats/ carbs in fat. The problem with this is that I exercise as follows:
Mon: 30 min run, 45 mins weights
Tues: 30 min run, 45 min weights, 2/ 2.5 hours rock climbing
Wednesday: Rest/ 30 min run/ 30min circuits
Thurs: 30 min run, 45 mins weights, 2/2.5 hrs climb
Fri: 20 mins cv, 45 min weights
Saturday: Either military training (so lots of phys) or 5 mile run and 45 mins gym and a few hours climbing
Sunday: military training (phys like a run and assault course) or 5 mile run and climb.
I'm really nervous about upping the cals since I've been going through a period of losing weight eating not very much (due to being busy and neglecting eating), and want to adjust my metabolism but don't want to gain fat. Also I feel tired at times and want to perform the best possible for a future career in the military. Can anyone point my in the right direction nutritionally?