Tier = fancy word for decreasing number of repetitions. 

Today's workout is a double kettlebell complex that has 5 rounds with 1-2 minutes of rest in between. The first round is 10 repetitions of each exercise, the second round is 8 repetitions of each exercise, then 6, then 4, then 2. If you would like to add an extra challenge, you can increase kettlebell weight each round.

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