The first time I used Newtons, I just started wearing them. I was just getting back into running, so it was a natural progression because I was building mileage back up as I acclimated.
If I were you, I'd take it very very slow. Also, pay careful attention to stretching your calves and watching your ankles/achilles. You don't want to end up with ankle/achilles tendonitis, particularly right before a marathon.




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