Combining cardio workouts such as running, rucking and swimming with other load-bearing activities is necessary for those ...

SwimSwam’s daily swimming workout series is a collection of workouts written by coaches from a variety of backgrounds.

“You wouldn’t go right out and say, ‘I’m going to run 10 miles,’” said Cokie Lepinski, a U.S. Masters Swimming coach ... the pool can become serious exercise.