AT THE BEGINNING
1. If your goal is better endurance.
2. On upper-body strength training days.
3. If your goal is just general fitness.

AT THE END
1. If your goal or priority is
to build muscle and strength.
2. On lower-body strength training days.
3. If your goal is burning fat and losing weight.
As a conclusion always choose what you prioritize and the form of cardio and training that you like, focusing all of your energy there.