Is the 180 formula still applicable for an 11 years old boy? Can MAF training help such a young kid?
Hi Jason, thanks for your question. The 180 formula is only applicable for people over the age of 16. "For athletes 16 years of age and under, the formula is not applicable; rather, an MAF HR of 165 has been used." Phil Maffetone - The 180 Formula
You could still do MAF type training but just keep it fun and with a HR under 165.
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