Swimming workouts

Franticantics
Franticantics Posts: 117
edited September 24 in Fitness and Exercise
So, i'm trying to change up my workout a little just to keep my body on its tippie toes!
Anyone have any suggestions of how many lengths you should do for it to be at all effective.
All i have set in stone is that I shall tread water for 5 minutes 3 times during my workout...but other than that, swimming is not my strength, suggestions please?
xxx
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