This achievement is really up to you and how you think you are best suited to pop it. For me, I went for it on a 10 minute session since there are only 10 or so drills in that session. As long as you get 5 stars on 8/10, you will unlock this achievement. I believe I used the 10 minute fat burner since it's a lot of simple motions that shouldn't tire you out too quickly.
However, if you have the endurance for it... you can also attempt a 60 minute session to give you more room for error as there are many more drills.
**EDIT** - I unlocked this on Rapid Results Fat Burner - Cardio Max, which was my first 5 star. It appears as if other workouts are glitched, so try this one. Will continue to update as info comes out.
**EDIT 2** - Realized I never mentioned before, but it was also a clean running... meaning I never paused or tinkered with the rewind function if I messed up. Just wanted that piece of info out there.