efficacy

I just read this study on high intensity excersize and increase CAC. What does this for bodybuilders and other athletes? Is it something to even worry about? https://www.news-medical.net/news/20230105/Intense-exercise-encourages-coronary-artery-calcification.aspx

Building up scar tissue doing: 25 gauge x 1" needle glutes, alternating 2x per week So I switched to: 27 gauge 1/2" needle delts, thighs, alternating 2x per week Do you think TRT efficacy will increase by not injecting into the same spot all of the time (scar tissue)? Please don't respond...