Leave chlorinated lanes behind and enjoy all the benefits of a brisk swim with the bonus of outdoor beauty. Join a swimming club like a triathalon training group or the so-called “polar bear” clubs for the cold-inclined. Or just find a quiet swimming hole and take the plunge. Challenge yourself to some strokes through fresh or salt water. Always consult a physician before starting any exercise routine.

(When logging progress for this challenge, only log as many days as you participated in the activity within the 30-day timeframe.)