@builtfromhome: THE HIDDEN AB MUSCLE THAT NO ONE TRAINS (but should) It’s the serratus anterior. I bet you’ve never heard of this muscle, and yet… It’s CRITICAL for both the appearance and functionality of your upper body. WHAT HAPPENS WHEN YOU TRAIN IT: 1️⃣ Better posture and scapular control 2️⃣ Stronger, more stable shoulders 3️⃣ Improved connection between your shoulders and core 4️⃣ More defined serratus muscles for that athletic, sculpted look Train it properly to build a body that not only looks good but moves well. #abs #coreworkout #shredded #c#corefitness