Day 19: Hollow to Crunch

Day 19: Hollow to Crunch
Complete 4 sets of 30sec Combos with a 20sec breather between sets - this will be your workout for challenge #19
If 30sec is too much, scale back to 15 - 20sec and build up over time. Don't forget to share your score via the hashtag #GL30dayabs
- In the Hollow, Keep your lower back on the floor
- In the Crunch, tuck your whole body up as high as you can
- Reduce to a Crunch and a Hollow with feet on the floor if your back begins to hurt