History in the GTA Series
Athletic clothing has been in GTA since GTA San Andreas (2004) introduced the gym and body-stat system: CJ could buy jerseys, tanks and running shoes from Binco and Sub Urban, and getting fit at the gym was a signature loop. Later games largely dropped the RPG body-stat layer, keeping activewear as cosmetic clothing rather than a stat input.
What Is Known for GTA 6
Rockstar has not confirmed whether GTA 6 has a gym/fitness or body-stat system, nor any athletic-wear stores, items, or effects. The San Andreas-style loop is something fans hope returns — but it is not confirmed.
Frequently Asked Questions
Did athletic wear ever affect stats in GTA?
In GTA San Andreas, clothing and the gym fed CJ's body-stat (and respect) systems. Later games kept clothing largely cosmetic.
Is a fitness system confirmed for GTA 6?
No. Rockstar has not confirmed a gym/body-stat system or athletic-wear specifics for GTA 6.