💡 CPR tip: When doing chest compressions, lock your elbows and keep your arms straight, just like in clip A. Think of it as using your whole body, not just your arms. The motion should come from your hips, helping you use your body weight to press down with strength and control. If your arms are bent, the movement relies more on upper body strength which can make compressions less effective and cause quicker fatigue. | Resuscitation Council UK