Can you grow wrist size?
Unlike your upper arms and forearms, your wrists don’t contain large skeletal muscles. Instead, they are comprised of tendons and sinewy flexor and extensor muscles.
Therefore, you cannot significantly increase your wrist size using weight training like you can with other body parts. However, you can strengthen the muscles and tendons, which may slightly increase their thickness.
In addition, your wrists can become thicker with increased body fat or total body water retention. This effect is evident by the fact that overweight and obese people have larger wrists than fit people.
How can I get thicker wrists?
Certain exercises will strengthen your wrists and may even slightly increase wrist size. However, the muscle bellies are in the upper forearm and not within the wrist itself. So your forearms will grow more than your wrist.
Also, there is no way to drastically change the size of your bones once your body stops growing in childhood. Still, your wrists will get slightly thicker when you gain body weight.
Do your wrists get smaller when you lose weight?
Your wrists will also get slightly smaller when you lose weight. This decrease in wrist size is due to the small deposits of body fat and any water retained in your wrist joints.
However, don’t expect drastic changes in wrist size unless you lose massive amounts of body weight. Most of the time, your wrist size will only change by 1/16th to 1/8th of an inch.