Central sleep apnea or CSA is a very uncommon version of apnea. While obstructive apnea is seen in a growing number of the population, and is due to blocking of the airway, CSA involves the nervous and respiratory systems. An apnea is an event of suspended breathing and repeated apneas can lead to serious complications, one of which includes awakenings and a loss of quality sleep.
Although it is possible to experience a severe muscle cramp without any prior exercise or physical activity, it is much more common for leg cramps, foot cramps and all types of muscle cramps and spasms to occur after or during strenuous physical activity. When your muscles are pushed to their limits, or the tissue within is stretched to a point that it is not used to, your body will often times respond with a sudden contraction in the particular muscle, either immediately or later in life - often times while you are sleeping that night.
With the winter setting in fast, many people are put off from going to the gym by the colder and wetter weather, as they’d rather stay at home in the evenings in the warm and dry. The winter weather and darker evenings also stops people from going running, keeping them indoors kicking their heals instead. It’s easy to let your fitness slide when you don’t keep to a regular schedule, and a great way to make up for your lack of activity during the winter is to buy a piece of gym equipment to use at home.