Sarcopenia, a decline in skeletal muscle with age, is inevitable. I have experienced symptoms of this and have then taken measures, which includes weight lifting. It has helped a lot.
Causes of the loss of muscle mass or strength might include hormonal changes, sedentary lifestyles, oxidative damage, infiltration of fat into muscles, inflammation and resistance to insulin. Some problems stem from the brain and nervous system, which activate the muscles.
Experts say the best approach to restoring or maintaining muscle mass and strength is exercise, particularly resistance training.
The standard practice is to eat breakfast every day. The saying “Breakfast is the most important meal of the day” has been drilled into my tiny brain since birth. For me it just was not so important. Over the years I have deviated from this breakfast practice on many occasions, mostly without issue. I say mostly because I often inadvertently delay until well past lunch. This is the 16/8 fast, don’t eat for 16 hrs a day, but eat for only 8. It is not as radical as you might think, as most of the time you are asleep.