Using the TRX as support, lower yourself down into a pistol squat, then return to the start position. The TRX should just be a support here so try and do as much of the work as you can yourself.

However, there are alternative squat exercises you can do with the TRX like an assisted pistol squat or Sissy squat, which I personally found more effective. Read more: I tried a Hyrox race for th ...