How to Transition From Base Phase to Build Phase

So you take that estimated maximum heart rate, that it's sort of estimated but also based on data that you have Take 75% of that maximum heart rate number, you could use that as your heart rate ceiling for so-to-work. Maybe the test did not give you a good representation of your so-to heart rate So try this maximum heart rate based approach and see if it corresponds or not. Perhaps that might be something that can show you that I guess your sent to heart rate might not be well estimated from that 20 minute time trial. Because it is not always a good estimate, that's definitely not the case,. The final question for today is from Paul from the United Kingdom