I do foundation training 4 days a week and run twice a week, and rock climb 3 times a week. When I do gymnastic training on Monday and Tuesday, it goes well because if I try to do a few rep of the exercise I did that day a few hours later is is a lot more difficult. When I try to train on Thursday and Friday after running on Wednesday, I don't have much energy so I do 1 less rep for each set or 1 less set. 5 min after exercising It is hard to do a few reps of an exercise I did that day; but it is only temporary. A few hours later, I can do a few reps of the exercise I did that day with the same difficulty as I first started that exercise that day for the workout.
When I don't run at all, the training for Thursday and Friday goes as well as Monday and Tuesday.
I want to do gymnastic training 4 times a week cause its my favourite part of my day and if I don't, I feel fat and uncomfortable.
How can I do cardio to make my heart strong so it doesn't have to work as hard to improve general fitness and still do gymnastic training 4 days a week properly plus the same amount of rock climbing?