4 Minutes a Day With This Exercise Will Guarantee You Excellent Results in Only 1 Month

Day 13 — Rest
Day 14 — 90 seconds
Day 15 — 90 seconds
Day 16 — 120 seconds
Day 17 — 120 seconds
Day 18 — 150 seconds
Day 19 — Rest
Day 20 — 150 seconds
Day 21 — 150 seconds
Day 22 — 180 seconds
Day 23 — 180 seconds
Day 24 — 210 seconds
Day 25 — Rest
Day 26 — 210 seconds
Day 27 — 240 seconds
Day 28 — As long as you can!
HOW TO DO THE PLANK?
The plank has to be done in a proper position, so make sure you acquire it. Place your hands properly. Make sure your elbows are directly under your shoulders so that you have the proper distribution of weight.
Make sure your spine is straight. Make sure your neck and back are straight, too and avoid rounding. Your legs should be slightly apart. Feel your thighs. The distance between your legs should be adjusted. You must relax your body and do the plank while breathing slowly.
If you follow this plan strictly and without excuses, you’ll be stunned by the transformation of your body!
Source.http://healthnaptitud.blogspot.hk/2017/08/only-4-minutes-day-with-this-exercise.html
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