Figure 1.3. Yellow, the color of smileys. Green. Green is most commonly associated with nature. Itâs a soothing color that symbolizes growth, freshness, and hope. Thereâs little doubt why the color has been so closely tied with environmental protection. Visually, green is much easier on the eyes, and far less dynamic than yellow, orange, or red.
Circulatory problems could also cause leg cramps while sleeping because of the poor or reduced supply of oxygen to the muscle and tissue. Nocturnal cramps can affect anyone from any age group. However, in most cases, it affects people with poor circulation in their limbs especially pregnant or elderly women.
The recurrent, painful tightening usually occurs in the calf muscles and can cause severe insomnia. The exact mechanism is unknown, but the cramps are probably caused by muscle fatigue and nerve dysfunction rather than electrolyte or other abnormalities. Others have suggested that in the nocturnal recumbent position, the foot is passively in plantar flexion and the calf muscle fibers are already maximally shortened, so uninhibited nerve stimulation leads to cramping. 6. Exercise research suggests that muscle fatigue is a primary cause of leg cramps.