Heat makes people sleepy because of the mechanisms the body uses to keep itself cool, lack of adjustment to warm temperatures and lack of sleep due to exposure to hot, humid nights, according to Global Bioweather. The human body takes several days to acclimate to the heat, and a person who has not acclimatized to warm weather is likely to feel sluggish. Oxygen levels and blood pressure are also lower.Know More
Global Bioweather explains that the human body prevents overheating by opening blood vessels to carry more blood to the skin. Widened blood vessels result in the lower blood pressure and reduced oxygen levels that cause heat fatigue. This fatigue often results in individuals becoming moody, aggressive and displaying slowed reaction times.
Individuals with certain health conditions, such as obesity, high blood pressure and kidney disease are more prone to heat exhaustion, according to WebMD. Heat exhaustion is a medical emergency that occurs after exposure to heat for several days. There are two types of heat exhaustion. Water depletion heat exhaustion results in excessive thirst, weakness, headaches and loss of consciousness. Salt depletion heat exhaustion results in nausea, vomiting, muscle cramps and dizziness. Treatment for heat exhaustion includes re-hydration, using ice towels and fans, removing unnecessary clothing and taking cool showers.Learn more about Human Anatomy
According to NHS Choices, blue fingernails are caused by low blood oxygen levels or poor circulation brought on by exposure to cold temperatures. This condition is called "peripheral cyanosis."Full Answer >
Drowsiness may occur as a side effect of taking ibuprofen, according to WebMD. While this symptom is not noted as serious, it is recommended a person contact a doctor if problems persist. Other possible side effects include nausea, vomiting, constipation, diarrhea and headaches.Full Answer >
A person feels sleepy after eating carbohydrates because carbs make tryptophan and serotonin more accessible to the brain, according to WebMD. Simple carbohydrates can also make a person feel sleepy, explains Brian Willett on the Jillian Michaels website.Full Answer >
In biology, feedback inhibition refers to the mechanisms that control certain processes and functions within cells, the body and even the environment. At its most basic, feedback inhibition means that when some sensor gets a certain amount of feedback from the environment, it turns another system on or off.Full Answer >