Hey guys, this may sound weird, but today I was doing some side laterals and noticed a line becoming more visible by my lateral deltoid at around the 10th rep of each set. It didn’t hurt, but I was told that the line was a sign that the muscle was getting pumped. What do you guys think about that? Unfortunately, I couldn’t film a video of it because the gym I go to prohibits filming.
You have discovered a striation.
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