Would it be more effective to run straight for 40 minutes or run for 10 then...

[EmmaL]

...bike for 5 and do that 4 times? I'm trying to tone up and lose weight. 130 pounds, 5'4

 

[Tom]

i would alternate, do 40 mins one day, and the other way the next.

Can you plz sign up at
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[Kat]

alternate between them.