I started the stretch series last week. My biggest problem right now is the last parts of the bridge series from the handstand and then all the bridges. I just can't seem to be able to get myself into even a mediocre position to work on just holding myself up. I assume its a two-fold problem, both upper thoracic and shoulder mobility and strength in those areas as well. Any tips, modifications, or exercises, other than just put the time in, that might help build these weak spots? Thanks.
As for the rest of my practice, I do Coach Sommer's recommended schedule and also hit the conventional gym 4 days/week.