Normal arterial oxygen is approximately 75 to 100 millimeters of mercury. Values under 60 mm usually indicate the need for supplemental oxygen. Normal pulse odometer reading usually range from 95 to 100 percent. Values under 90% are considered low.
3 Positive reinforcement is most effective when it occurs immediately after the behavior. Reinforcement should be presented enthusiastically and should occur frequently. Deliver reinforcement quickly: A shorter time between a behavior and positive reinforcement makes a stronger connection between the two
Do a lot of core workouts, like push up .Mountain climbs burpees etc... also eat clean.
I personally think about 14 or 15
protects against infection______ nervous