We want each round to be an all-out Sprint. That means you need to make sure you are really warmed up and ready to go at Round 1.
Ideally, the Double Unders should be unbroken and done as fast as possible. If you aren’t able to do this, that is ok, either scale the reps to something you know you can hit in a few sets, or attempt to get the set done as fast as possible. This is a good workout to practise Double Unders under a very specific fatigue.
Each round (Sprint + Double Unders) should take less than 2min, which gives you over a minute to rest. This will feel adequate for the first few rounds, but then it will start to go by really fast! Focus on getting your heart rate down as quickly as possible during the rest.
NOTE: Warm up to a heavy triple and hold that weight across the 5 working sets
50 Toes to bar