The reason is your body's focus is diverted from digestion to regulating the body temperature and the chilled water. Your body needs to spend extra energy to regulate the body temperature when you consume anything which has a very low temperature.
Drinking water cools down your organs as it passes through your eosphagus and into your stomach. If this feels uncomfortable I suggest switching to warm water as it is more easily assimilated into your body than cold water.
Weak or Shaky Muscles
You drink water to prevent muscle cramps, right? Correct, but overhydration can also lead to spasms and cramps just as well. Again, this is because of the diluted sodium levels in your blood. You might start to notice that you feel shaky or weak without doing any physical exercise.
Drinking cold water actually speeds up the process of increasing body temperature because your body is working harder to warm.
Cold water shock causes the blood vessels in the skin to close, which increases the resistance of blood flow. Heart rate is also increased. As a result the heart has to work harder and your blood pressure goes up. Cold water shock can therefore cause heart attacks, even in the relatively young and healthy.
The risks and disadvantages of drinking cold water include thickening of mucus causing respiratory difficulty, headaches, tooth sensitivity, slowing gastric emptying, aggravating achalasia (a rare disease making it difficult for food to pass from the esophagus to the stomach), and causing 'cold stress'.
Research from 2001 linked drinking cold water with triggering migraine in people who already experience migraine. The pain related to achalasia, a condition that limits your body's ability to pass food through your esophagus, can also get worse when you drink cold water with a meal, according to a 2012 study .
Researchers have found that taking icy showers may heighten your immune system and make you more resistant to illness. A clinical trial in the Netherlands found that cold showers led to a 29% reduction in people calling off sick from work. Another study even connected cold showers to improved cancer survival.
Drinking warm water can help loosen up the mucous. Loosening up mucous allows it drain more easily versus cold water, which can have the opposite effect. Drinking a warm glass of water upon waking or during meals can help promote healthy digestion.
This is normal and is known as a “physiologic tremor.” Certain factors can make the tremor more noticeable, including stress or anxiety, caffeine consumption, and lack of sleep. In some cases, severe or persistent tremors may indicate an underlying medical condition or a side effect of a particular medication.
This is normal and is known as a “physiologic tremor.” Certain factors can make the tremor more noticeable, including stress or anxiety, caffeine consumption, and lack of sleep. In some cases, severe or persistent tremors may indicate an underlying medical condition or a side effect of a particular medication.
When your body hits cold water, “cold shock” can cause dramatic changes in breathing, heart rate and blood pressure. The sudden gasp and rapid breathing alone creates a greater risk of drowning even for confident swimmers in calm waters. In rougher open water this danger increases.
Research shows this is because cold water shocks our nervous system, which triggers our body's fight-or-flight response, producing an intense adrenaline rush.
Risks of Drinking Cold Water
When you drink cold water, your body has to get more energy from your body in order to warm up the cool foods and liquids. This makes the digestive process take much longer than when you drink warm liquids and could lead to indigestion, constipation, and various other digestive issues.
Drinking cold water or cold carbonated water for orthostatic pre-syncope may increase blood pressure and improve baroreflex function.
Helps in speeding metabolism
Drinking cold water on an empty stomach can help in speeding up the metabolic rate, eventually leading to a proper digestion. To facilitate digestion, one should drink cold water on an empty stomach.
And cold water is thought to create excessive moisture and dampness, adding to excess phlegm and mucus, kidney and gallbladder stones, and arterial plaque.
We observed a significant decrease in heart rate and skin temperature after cold water immersion as reported in other studies. It has been suggested that cold water immersion leads to cutaneous vasoconstriction, resulting in a decrease in peripheral blood flow.
During the first several minutes of cold shock, and often for much longer, most people find it impossible to get their breathing under control. Breathing problems include gasping, hyperventilation, difficulty holding your breath, and a scary feeling of breathlessness or suffocation.
If you find yourself in the cold water unexpectedly, do not try and swim until the first stage of cold water shock, which can last up to three minutes, has passed. Once your heart rate and breathing has started to normalise then, if sensible, try and swim to shore.
Blood pressure started increasing within two or three minutes after the water was ingested, increased rapidly over the next 15 minutes, and then began to decrease after about 60 minutes.
The alteration of rectal sensitivity and abdominal symptoms following cold water stimulation provided further objective evidence for visceral hypersensitivity in IBS patients.