What would the maximum heart rate be for a 12-year-old?

What is the main causes of gray hairs and balding? write your answer in 2 paragraphs

Describe specific ways your friend can use frequency, intensity, time, and type to safely apply the overload principles to his workout schedule. provide two ways per training principle. sunday30-minute bike ride monday20 push-ups, 10 squats, and 20-minute jog tuesday30-minute bike ride wednesdayrest thursday20 push-ups, 10 squats, 25 curl-ups, and 20-minute jog friday30-minute bike ride saturdayone-hour walk

True or false. mucous membranes secrete mucus that traps pathogens.