The American College of Sports Medicine (ACSM) recommends that
calorie levels never drop below 1200 calories per day for women or 1800 per day for men.
Not exact matches
All I have to go on is anecdotal evidence but my own brood
never took vitamins and their iron
levels were always normal even though they consumed nothing but breastmilk until almost a year old, and then 4 of my brood nursed for the majority of their
calories well past 18 months of age.
I'm sorry but he'd
never be able to maintain his
level of muscle mass on such a low
calorie diet... heck, a 5ft woman would probably lose weight eating and training like that.
With weight gain supplements, the
calorie levels vary greatly, and you should
never skimp out on them.
The thing that saddens me is seeing the look on their face as they describe how much body fat they have gained as they were so used to carb loading for races, and
never learned how to properly eat the correct
calories for their new found activity
levels.
If you burn
calories — hundreds of
calories — so you increase your cortisol
levels — you'll still
never lose weight or increase your strength or endurance.
It has
never been so easy to test fitness
levels and aerobic capacity, adjust heart rate zone
levels to optimize training, and set goals based on distance, time or
calories burned