I think this is mainly a problem for adolescent women who are highly physically active, not sure how old you are, but whatever your age, do not worry about stopping or experiencing changes in your cycle. Exercising daily is great for your overall health. If a problem occurs, see a Gynecologist, exercise won’t cause you to never get it again or something that extreme.
You’ll find planks among Ceasar Barajas‘, Jessica Muenster’s, and Amanda Murdock’s favorites exercises to do with no equipment. Murkdock (who recommends “planks all day long”— ouch) says that they work the entire body, can be done anywhere, and have a lot of variations. Muenster specifically favors plank jacks with palm-to-elbow movement because they also raise your heart rate.
Whether we’re fully conscious of it or not, we’re always looking for how to be happy. And exercise is one of the most obvious steps to take, as it’s not a coincidence that you feel better after a good workout: It’s science. A Penn State University study found that people who exercised, whether it was a mild, moderate or vigorous workout, had more pleasant feelings than those who didn’t. (1)