100 day burpee challenge

5050 to be exact. That's fascinating. It's 1/2 the number x the number +1. I wonder if that works for all numbers like that...
 
Right now. Or the 15th, in which case you owe me 21 and will do 7 tomorrow.
Reed

Day 2: two burpees.
Reed

Day 2: two burpees.
Reed
 
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