Do I really have to explain this one? It’s simple, only use up picks today. That’s it!
99% of all clients I’ve had, start playing guitar by using only down picks. When they start using alternate picking, there is an unbalance between the two. Their down picks have gotten strong, but the up picks are still developing. Take a day to create equal balance between the two. For today, use only up picks. If you’re like most players and have strong down picks, I seriously doubt that your up picks will ever get stronger than your down picks. Therefore, the more time your can spend on the ups exclusively, the more balance you will develop. Have fun!