When I completed W3R3 on Thursday I was really looking forward to the W4 challenge.... So off I go this morning, (I'm plodding on a treadmill in my garage) did the first 3 & 5 mins but found that the recovery time wasn't quite sufficient as I was still gasping by the time the second 3 mins rolled round. I still haven't mastered the correct breathing technique which is why I'm gasping. Anyhow I ploughed on and managed that. BUT the last 5 mins beat me. I stopped. I tried walking for a few seconds and starting again but my legs were so heavy. So I just stopped full stop... Am a bit annoyed at myself for not pushing myself a bit more. When would be the best time to attempt it again? Do I give myself a rest day or try again tomorrow??