So, my knees are a bit buggered which has led me to swimming as a way of continuing cardio exercise. I'm curious though, how effective is swimming versus, say, interval workouts for running?|
Feeling like I'm going to have to do more work (or longer amounts at least) for the same level of workout.
#10989937, By MrDigital Exercise advice and weight loss
MrDigital 1,885 posts
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