how should your arms be positioned when performing the chest compression
Place two fingers at the tip of the breastbone. Place the heel of the other hand right above your fingers (on the side closest to the person's face). Use both hands to give chest compressions. Stack your other hand on top of the one that you just put in position. Lace the fingers of both hands together, and raise your fingers so they do not touch the chest. The compression rate is at least 100 compressions a minute. If you know CPR and are giving rescue breaths, give 30 compressions to 2 breaths.