Way too much. You should be out within an hour. Cortisol levels start to build up. You need to go home and eat.
I don't do cardio on days I lift unless I cardio in the AM, and come back in the PM to lift. 4 day split means like 3 cardio/off days. I wouldn't run more than 30-40 minutes unless you're trying to lose weight. I only run to keep my heart strong enough to keep the blood pumping, lol.
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