I think the other comments covered it, but let me repeat that pacing yourself is super important. if you have a smart watch then there are running apps that will watch your heart rate and tell you when to speed up or slow down to keep you in cardio without making you feel like you’re going to pass out.

Which ones might those be? I’ve got Fitbit and Google fit workouts but neither of those have that feature. So far I’ve just been jogging until I can’t and then walking for a good 2 minutes before I start again