I am going to start doing cardio 4-6 times a week. 3-4 low intensity days and 1-2 days using 100 meter sprints. I am wondering how I should go about doing these? I was thinking of seting my watch for 15 minutes and then running as many 100m dashes as I could EDT style, each week trying to beat the record. Or maybe just run 100m rest 2min or so and just run a certain number like 5 or 6. On the other hand I don’t want to overdue it with these and hurt my squat. I know CT in the Black Book advised against running 400m dashes more than once a week. And only doing 2 sets per session.