I was first creeped out then pissed off when I found out the software my gym uses to bill and track attendance was hooked into Gravatar. I logged my performance

I was first creeped out then pissed off when I found out the software my gym uses to bill and track attendance was hooked into Gravatar. I logged my performance one day and the icon I use on internet comments showed up next to my real name. What else are they sharing and with who? I'm pretty sure I didn't agree to the workout tracking software sharing my details with random internet companies, healthcare providers or insurers... but nothing is stopping them apparently.