30 Day Ab Challenge

Here is the link for this challenge, but I have typed it all out for you below: http://30dayfitnesschallenges.com/30-day-abs-challenge/

The exercises to do are, in this order, situps/crunches/leg raises/planks (seconds)
How to videos:
Sit ups: https://www.youtube.com/watch?v=1fbU_MkV7NE
Crunches: https://www.youtube.com/watch?v=Xyd_fa5zoEU
Leg raises: https://www.youtube.com/watch?v=JB2oyawG9KI
Planks: https://www.youtube.com/watch?v=3vgG_Zemg88

Day 1 - 15/5/5/10 sec
Day 2 - 20/8/8/12 sec
Day 3 - 25/10/10/15 sec
Day 4 - rest
Day 5 - 30/12/12/20 sec
Day 6 - 35/15/15/25 sec
Day 7 - 40/20/20/30 sec
Day 8 - rest
Day 9 - 45/30/30/38 sec
Day 10 - 50/50/30/38 sec
Day 11 - 55/65/33/42 sec
Day 12 - rest
Day 13 - 60/75/40/50 sec
Day 14 - 65/85/42/55 sec
Day 15 - 70/95/42/60 sec
Day 16 - rest
Day 17 - 75/100/42/65 sec
Day 18 - 80/110/48/70 sec
Day 19 - 85/120/50/75 sec
Day 20 - rest
Day 21 - 90/130/52/80 sec
Day 22 - 95/140/55/85 sec
Day 23 - 100/150/58/90 sec
Day 24 - rest
Day 25 - 105/160/60/95 sec
Day 26 - 110/170/60/100 sec
Day 27 - 115/180/62/110 sec
Day 28 - rest
Day 29 - 120/190/62/115 sec
Day 30 - 125/200/65/120 sec