I started doing kettlebell swing, breath ladders a couple of months ago to improve my VO2 Max, which is an area I felt could use some improvement. I've seen a number of different patterns recommended but I've been doing 1 to 20 and back down again. I do this as an additional workout session each week instead of adding to or replacing an existing workout. I'm very happy with how much I've improved each week. Would heartily recommend.
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