Core workout challenge for beginners #coreworkout #corechallenge | 다이어트

Core Workout for Runners! A strong core is huge for runners — it keeps your posture tall, helps transfer power from your legs, and prevents late-race form breakdown. Here’s a runner-specific core workout you can do in about 15 minutes, no equipment required (or add a band/weight if you want): Do each exercise for 30-40 sec or 10-15 reps Circuit (Repeat 2–3 Rounds) 1. Dead Bug * Lie on your back, arms up, legs at 90°. * Slowly lower opposite arm leg without arching your back. * Great for deep cor