If you have not been trained in cpr, what should you do? give chest compressions, something is better than nothing nothing, you don't want to injure them just shout for none of the above

Give chest compressions and shout for help.
The chest compressions can save their life, it takes a lot of force to permanently injure someone from chest compressions.

The average resting heart rate (hrrest) for a 34 year old is 73 beats per minute2. 34 year old males average heart rates of 71 bpm while females average slightly higher at 76 bpm2. the normal resting heart rate range for all adults and children 10 and over is between 60 and 100 beats per minute3. 90% of 34 year olds resting pulses fall within the range of 54 to 92 bpm. in general, an adult's resting heart rate will be lower for those in better athletic condition.