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.
A normal resting heart rate for adults ranges from 60 to 100 beats a minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness.For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats a minute.To measure your heart rate, simply check your pulse. Place your index and third fingers on your neck to the side of your windpipe.To check your pulse at your wrist, place two fingers between the bone and the tendon over your radial artery â which is located on the thumb side of your wrist.When you feel your pulse, count the number of beats in 15 seconds. Multiply this number by 4 to calculate your beats a minute.o check your pulse at your wrist, place two fingers between the bone and the tendon over your radial artery â which is located on the thumb side of your wrist. When you feel your pulse, count the number of beats in 15 seconds. Multiply this number by 4 to calculate your beats a minute.