I am a 17-year old male, have practiced the Zone for a couple months, and have come across a problem relating to exercise. I play handball for about 1.5 hours six days a week (sometimes for 2 or more hours on Saturdays), which, according to the criteria I found in one of the books (the Soy Zone), puts me in the category of "Elite Athlete" (very flattering!) for more than 2.5 hrs a week of exercise. I would like to keep up this kind of schedule, as handball is a fascinating game.
I have been underestimating my block requirement for a while and have only recently moved to 21, the number the block calculator and book gives me using the Elite Athlete designation (the 1.0 activity multiplier from the books). Still, I have recently felt tired mentally and physically, as though I have lost a lot of sleep. I have often felt unengaged and unfocused in my handball games, but I am confident I am getting the proportions of carbs to protein right in my meals.
Handball is a full-body workout, and information from other players and internet sources tells me that the game expends substantial calories: anywhere from 600-1000+ calories per hour, depending on singles or doubles, etc.
Could it be that I am not getting enough calories? It seems I have been losing excess weight and body fat, but wonder if I am not getting enough calories.
Would I need to add more monounsaturated fat to my diet? If so, how much?
Does being a teenager complicate the block requirement calculation?
Thanks a ton,