Jakub Wiliński

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Jakub Wiliński
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This is an AWESOME hour-long interval running set. I've got to say, HIIT is the way to go. I find it keeps my mind engaged and helps me actually get through my workout--instead of letting my mind wander and letting boredom creep in! #staystrong

Another pinner wrote: This is an AWESOME hour-long interval running set. Ive got to say, HIIT is the way to go. I find it keeps my mind engaged and helps me actually get through my workout--instead of letting my mind wander and letting boredom creep in!