AgeLess: Living Younger Longer

able acid activity aerobic exercise aging process allow alveoli amount animals approximately average become begin believe blood vessels body bone brain called calories carbohydrates cause cells changes chronic fatigue compound contain continue contraction decrease deficiency diet digestive disease effect efficiently eliminate energy essential exercise expectancy fact factors feel fluid foods function give gland glucose going heart hormones human immune important increase individuals inhibit intake keep kidneys known less lifestyle live longer look loss maintain meat mental minerals muscle necessary nerve normal nutrition occur older organs oxygen percent period person physical possible premature aging prevent probably problems produce protein reason red blood cells reduced remain result skin span stored stress substances supplements supply things tissues vegetables vitamins walking weight young younger