🔥Our New Year’s Sale is live: 40% off all apps and online courses. Train smarter, move better! The Power of Mental Focus in Muscle Development 💪🧠 Did you know that where you direct your attention during resistance training can make a significant difference in your muscle gains? A 2018 study led by Brad Jon Schoenfeld found that focusing internally on your muscle contractions can lead to significantly greater muscle growth, especially in the upper body. For instance, participants who concentra