Upstroke Without a Pick

This is a 2.18 minute video response from Mark Lincoln on Jun 5th, 2009

Question:

"Dmitry asked "Hi guys! Question from a beginner about playing without a pick. I'm trying to figure out how to do down and upstrokes by hand (mostly for the chorus parts of songs / bridges where the usual strumming pattern gets boring). The downstrokes, where the nails of my fingers strike the strings, come pretty naturally. But on the way up, some of my fingers (pinky and ring finger mostly) get caught on the High-E and B strings. Are there any (1) hand positions/movements, and (2) exercises that you guys can recommend to fix the problem? Many thanks!" "