Well couldnt that just be changes in hormone levels - i suspect DHEA = testostorone and estrogen , basic sex hormones control Peeling lips
We could have some kind of very low hormone levels or Something ..that by training went away - or did You take proteinshakes ? Could be low protein as well...going to The gym Cant be a logical cure..as normal people WHO dont go to The gym dont get This. Im sure U are cured but there are some Reasons why that is The case.