5-10 I would say is the reasonable amount of yine
Answer: Internal influences may mean health hormones, as hormones are a key structure in how we function. An external influence could be sleep, as humans need sleep as a way to recharge, or diets as they have an effect on both hormones and physical durability
The actual answer is D because risk factors are anything that increases the risk of someone getting sick or disease
Please mark as Brainly
To hear heart rate............