1-2-3-4-5 and 5-4-3-2-1 minutes at time trial power, 30 seconds between each, 10 minutes between sets

I use this in my spin class and with some of my clients. Kind of a good way to get acclimated to time trial power with short breaks but not enough to get HR settled. On the first set I went for steady power throughout (350-360) and on the second set I tried to up the power as the time decreased. Went for it on that last minute and held 442.