For me, I have better stamina doing weight lifting than cardio – don’t understand why. I used to do cardio almost daily then stopped and took up lifting. When I went hiking, I didn’t get as fatigued as fast – hiked faster for longer than in the past. Maybe my heart got stronger along with my other muscles or it didn’t matter the shape of my heart muscle as long as the other muscles were stronger or the strength of the other muscles more than made up for the heart muscle?
