If you can do 12 you can do 15, it is that simple, its all relative to their output, they don't just go from 3 rounders to 15 they work their way up to it which builds acquired muscle memory. most top level pros can come off the street with little training and go a good 6 to 8 rounds.
You skipped over the bit where they used to fight 20 and 40 round fights while it is so relative to the point being made, you're overthinking the basics of human conditioning in terms of output vs recovery time and trying to make this task bigger than what it is, as I said if youre a world class fighter that can fight a championship 12 rounder you can handle 15 no problems at all.
You skipped over the bit where they used to fight 20 and 40 round fights while it is so relative to the point being made, you're overthinking the basics of human conditioning in terms of output vs recovery time and trying to make this task bigger than what it is, as I said if youre a world class fighter that can fight a championship 12 rounder you can handle 15 no problems at all.
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