I am starting the couch to 5k program for the very first time for an online college PE class. However, for my class, I need to do an aerobic work out EVERY day for 30 min. The couch to 5k only has you work out for three days and then gives you two resting days. I need some advice on what kind of activities will be right for my resting day that is both aerobic and resting. Does anyone have any ideas?