On the fourth day of Fitness
My Y Coach gave to me
Thirty (30) seconds of planks
Twenty (20) awesome push-ups
Twenty (20) pop squats
and one minute of high knees by the tree
The plank is a simple and effective body weight exercise that you can do anywhere. In the plank position, you are forced to hold your body in a position that engages the core (abdominal muscles), shoulders, arms, and glutes. You can perform a standard plank, a forearm plank and/or a knee plank. When you become fatigued or if your core is a little weak it is easy to use sub-optimal form. Don’t do it!! Check your form in the mirror or ask a fitness friend to make sure that you are performing the exercise correctly. Below are links to several videos to help illustrate how to plank correctly.
Elbow plank vs. Full plank: https://www.popsugar.co.uk/fitness/Elbow-Plank-vs-Full-Plank-44085364