Alan Salgado Espino on Instagram: "If you’re post-ACL and still feeling unstable or underpowered — your quads might not be getting the signal they need. Here’s a 5-move quad stack built for serious intent: 1️⃣ Supine cable leg extensions — isolate quad in a gravity-free setup, crush mid to terminal range 2️⃣ Sissy squat variation — emphasize knee-forward, long-lever quad loading 3️⃣ Overcoming ISO on leg extension — max neural drive in weak range 4️⃣ Smith machine deep squat pulses — oscillatory