How is HIIT Helpful to Improving Strength?

HIIT (high intensity interval training) is helpful to improving your strength in many ways, one of which is building your mental grit for picking up heavier weights.

As you roll through this final week of training of FB30 in 30, have you noticed any ways in which the HIIT workouts have improved your lifts? How many times a week do you typically do HIIT workouts? https://gofb.info/FB3030ProgramDay25

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