Starting my own daily plank routine, goal is to get to a 10 minute plank. Doing 5 sets.  

1st set - 1 minute  
2nd set - 1 minute 15 seconds
3rd set - 1 minute 
4th set - 1 minute 
5th set - 1 minute 


started to shake on 4th set, getting closer to more stable sets

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