Core 20:00 [4]
Letting my legs recover from nearly 6 hours of orienteering yesterday so I just did core today:
Plank (1:30 middle, 45s each side)
25 crunches
15 side crunches (per side)
15 P90X switching scissors (hold 3 secs)
10 fall forwards
Plank (middle, right, left)
15 side plank dips (per side)
15 leg lifts
20 bicycle abs
10 single leg bridges
Plank (middle, right, left)