Hi all, I'm still working on my form and this is one of the things I haven't quite figured out. One of the lessons is that you should not push off or toe off. Particularly when running on rough surface my bare feet confirm this lesson. Push off / toe off would simply hurt. So especially on rough surfaces I try to focus on lifting my feet and do that 'early'. The other thing I read about is that one's calves should act as a spring. To me, this seems to contradict the idea of lifting your feet: if you lift your feet - I don't see how that can be combined with the idea of a spring. If your calves are springs, that sort of implies pushing off. Thanks for your help! Jaap PS: After more than a year of barefoor running and wearing minimal shoes, I still have sore calves/achilles from time to time. I'm not sure what I'm doing wrong. Maybe I'm still overstriding? Maybe I should focus more on lifting my knees?