If you prefer the top row of keys to always behave as standard function keys without holding the Fn key: 1  Choose System Preferences from the Apple menu. 2  Click Keyboard. 3  Click the Keyboard tab if it's not already highlighted.  Select Use all F1, F2, etc. keys as standard function keys.
In brief: Normal heart rate. Resting heart rate means the rate when not exerting effort, such as sitting, standing quietly, or lying down, usually 60-100 beats/min. A fit athlete will have a lower rate than an average person, as low as 40-60 beats a minute. Maximal heart rate is roughly 220- Age in years, Often, it is recommended aerobic exercise should be at 60-80% Maximal for healthy individuals.
Your heart normally beats in a regular rhythm and rate that is just right for the work your body is doing at any moment. The usual resting heart rate for adults is between 50 to 100 beats per minute.Children have naturally higher normal heart rates than adults.our heart normally beats in a regular rhythm and rate that is just right for the work your body is doing at any moment. The usual resting heart rate for adults is between 50 to 100 beats per minute.