How do you guys do hitt for longer then 20 minutes. I warm up for 3 minutes then fast jog at 7 mph, run at 9, then sprint at 11 or 11.5 forgot where it stops but then finish with a 1 minute cool down. I am absolutely spent
I lost a ton of weight this way but def burned too much muscle
I am starting fasted tomorrow. I am going to try and keep it going to summer. I only planned on doing 45 minutes. Is that enough?