Why does it take me a good 40 minutes to get warmed up enough to feel like I can give a maximum effort and to take my heartrate into the 85% MHR range and sustain it? My first 2 X 20 feels like I am just getting the whole system up and running and is pure misery and the second 2 X 20 is fun and feels much easier. Should I extend the second one to a longer period of time?
How much time should be taken for warming up prior to all-out sprints of 1-2 minutes? I've also noticed the same situation when I try those.
How much time should be taken for warming up prior to all-out sprints of 1-2 minutes? I've also noticed the same situation when I try those.