For ice, use an ice pack, or put crushed ice in a plastic bag. Cover the bag with a towel before you place it on your skin. Apply ice for 15 to 20 minutes every hour or as directed.

A recent study of Spartathlon runners showed that just after the race, their blood samples – which looked similar to those of people close to death according to Dr Papadopoulou – returned to normal within days.

As mentioned, valerian root has been linked to vivid and unusual dreams. Stop taking them if you notice unsettling sleep patterns.

Excessive iodine: When you have too much iodine in your body, your thyroid makes more thyroid hormones than you need. You may develop excessive iodine by taking certain medications, like amiodarone (a heart medication).

The good news is that it's never too late to stop smoking. The younger you are, and the sooner you stop, the better. Even people who quit at the age of 60 can reduce their chance of getting cancer and other diseases.

We also love these tablets because they contain a probiotic blend for gut health, are certified vegan and non-GMO and don't contain artificial ingredients. 

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Image courtesy: Jordi Saragossa By understanding the science of endurance training, you can achieve sustainable advances in your training and performance. Lactate that builds up during exercise can be reused for energy in two ways.

Sleeping pill use may increase the risk of nighttime falls and injury in older adults. If you're an older adult, your health care provider may prescribe a lower dose of medicine to reduce your risk of problems.

Mitochondria in your muscles receive the lactate and oxidize it into molecules to create energy to sustain exercise. As all good students of Uphill Athlete know, mitochondrial density is increased through aerobic base training.

In our books, Training for the New Alpinism and Training for the Uphill Athlete, and an article on why we are forced to slow down, the concept of a lactate “vacuum” is referenced, which is scientifically known as the intracellular lactate shuttle. 

At the Spartathlon, which a freak storm has made especially harsh this year, Dean Karnazes is one such runner pushing his limits. This is his second Spartathlon, but this time he’s had a tough start and is nursing a bruised hip after being hit by a car.

According to Meijen, it’s about being ready for those moments. Before the race, she says, you want to reflect on previous experiences, learning from them so that you can prepare how you’ll respond before you get more info there.

One user shared, "One of the best aspects of this humidifier is how quietly it operates. Even on the highest setting, it produces only a gentle hum, making it ideal for use in bedrooms or nurseries."