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It's definitely possible to burn 4300 a day if you're highly active and have a high FFMI (Fat Free Mass Index - the technical term for having a lot of muscle an
by 5trokerac3 7y ago
It's definitely possible to burn 4300 a day if you're highly active and have a high FFMI (Fat Free Mass Index - the technical term for having a lot of muscle and low fat for your body size). Someone who has a FFMI between 24 and 25 - the peak without steroids - generally has a BMR in the high 2000s.
- wang_li 7y ago>Fat Free Mass Index - the technical term for having a lot of muscle and low fat for your body size FFMI has nothing to do with having low body fat. It's literally the exclusion of fat from the index. You can have a high FFMI and a high BF%. A few years ago I had a DEXA scan done to assess my starting condition prior to starting an exercise regime. That scan showed me as having 30% body fat at a body weight of 260 lbs. Being 6'2" I had an FFMI of 23.4 and an AFFMI of 22.9. My calculated BMR at the time was in the 2200 kcal/day area. (Might be misremembering the BMR, but it definitely wasn't in the high 2000s.)