callan
The official ghetto booty
or have a tablespoon of concrete 4 times a day every 4-6 hours. if symptoms of being soft persists for more then a week consult your coach.Seriously, I tore my calluses open that they bled (during crossfit wod), multiple times!
Plus I used to box so they were good for making sure my nails didn't go through my palms.
Haven't used them in PL but tempted for use on that ABC bar!
Contemplating using them for chinups on the rack at PtC, that rips hands apart also.