I've been enjoying Mast as part of my cruise, helps keep me vascular. I haven't had any joint issues at all.
I'll keep you posted on how my cycle goes with the increased dosage.
The chest issue I have is really depressing, my pinched nerves had a massive impact on my left side (lat, trap, bicep, tricep and my upper peck) completely deflating my left chest. They say it's because of all the heavy medication I used to manage the nerve pain and the 3+ months off the weights etc. I've just recently started to get back into it and can see that its slowly starting to get back. My strength with chest press, lat pull downs, tricep extensions has literally gone down by 50%.