I started running regularly in VFFs. Previously I didn't run much at all. After a couple months I started running in my old sneakers (I forgot the VFFs when tra

I started running regularly in VFFs. Previously I didn't run much at all. After a couple months I started running in my old sneakers (I forgot the VFFs when traveling). The transition back was unpleasant (ie knee and ankle pain), to the point where I kicked off my sneakers and ran barefoot on the treadmill, which stopped the pain. This doesn't imply the VFFs are better for me, as the reverse transition could have caused pain as well. FWIW I'll probably buy another pain though.