I can now hold an advanced tuck front lever fairly easily for 15+ seconds, but as soon as I tried half pain failed 3 times. Why?

Long time no see all :) I have a short story to share and hopefully help someone. In the video you can see me do this excercise (idk what's called). This is, hands down, by far, simply, the best exercise that helped me progress the full planche. After only a month of doing it I saw huge results - my lower back and core got significantly stronger. However, it is an extremely dangerous exercise (at least for me). It puts so much pressure on your shoulder bones. I started spamming it every workout (3 times a week). And after every workout I felt that the pain is growing, and growing. After a month of doing it it finally happened - something in my left shoulder snapped/ moved/ squeezed and it left me with so much pain. This happened in November :( and there has been no healing. I've been having the same pain since then. I've tried resting, stretching, using all kinds of expensive meds - nothing helps. I know - I shoud've gotten to the doctor sooner - but it is what it is. I didn't put pressure on my shoulders since then, I stopped training planche, I cannot even do a push up. So, this saturday I am finally going to see a specialist. Wish me luck :)

Yo chat, is this a solid hold?

I’ve had a lot of upper back pain recently, especially with L sit. Any advice?

got an 8 sec handstand hold. Not great but new PR