With improved blood circulation to the scalp hair follicles will get a good supply of oxygen and nutrients from our diet. Good blood circulation also helps in distributing natural sebum evenly across the scalp, leading to good hair growth. This will result in healthier hair with more volume.hen blood flow in the scalp area is less than the normal, it will not receive the essential nutrients required for healthy hair growth. This will ultimately result in various hair related problems. But when you exercise your stress level decreases, which stimulates hair growth.
Twitching in the left thumb may also indicate an overdose of caffeine, stimulants or amphetamines or a drug side effect to estrogen, corticosteroids or diuretics, adds MedlinePlus. Diet is also a cause of left thumb twitching, especially when an individual fails to consume a balanced diet. When the body is unable to fight off ailments, such as an autoimmune disorder, twitching is often a side effect.
There are several superstitions about left eye twitching, but in medicine, eye twitching is actually caused by muscle spasms near the eye. Several superstitions surround twitches in the left eye, which can be considered a good or bad omen depending on the culture. The area of the eye which is twitching and the gender of the person experiencing this symptom will also play a role in the superstition.