I'll be taking up swimming soon. What's better if my goal is to build the most stamina
HIIT or swimming for lengths? Aka Low intensity steady state cardio
>>42600081
Stamina is for HIIT, endurance is for steady state, so HIIT in this case.
If you mean overall cardio gains, then do both. The higher your threshold the easier time you'll have maintaining a slower pace for extended periods.