AM - F500 - 40mins jogging on treadmill...average pace was a scorching 9:20-9:25 per mile. Heart rate was 130bpm at 8:57 per mile. Yikes. Although it would be silly to expect much better given the time off running. Calf held together fine. It was nice to have a day incline walking as that is getting old fast...on a day-to-day basis anyway.