this! plus some devices like apple watches are ridiciously incorrect. it keeps on lowering my zones because my heart is getting stronger. i supposedly ran part of my half marathon in zone 5 for 40 minutes which isn’t even possible without passing out lol
this! plus some devices like apple watches are ridiciously incorrect. it keeps on lowering my zones because my heart is getting stronger. i supposedly ran part of my half marathon in zone 5 for 40 minutes which isn’t even possible without passing out lol