Hi, my son is 14 and is 170cm and weighs 56kg. His resting heart rate is 58 bpm whilst lying and his bp is 116/56. Is he normal please?

Yes. The information you provided is not a cause for any concern. You may advise him that For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.