How To Build Speed And Stay In The Aerobic Zone

There are two sides to every story and this is often true in ultra marathon training. But in which way is it actually possible to do speed training AND stay in the aerobic zone at the same time…



Please share your comment after watching the video and tell me about your speed training and how often you stretch beyond so that you´re nearly crawling on all fours. I look forward to hear from you…



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