Hooked On Fitness on Instagram: "Ever finish a workout and feel like your muscles are twice their size? That’s the pump — and it’s one of the best feelings in the gym. 💪🔥 The pump happens when blood rushes into the muscles you’re training, filling them with oxygen, nutrients, and fluids. Your muscles tighten, veins pop, and everything feels full, strong, and alive. It’s more than just a look: 👉 it boosts nutrient delivery 👉 improves mind–muscle connection 👉 increases muscle volume temporari