When the sun starts burning down and the temperature soars, most people head for the pool. But a few dedicated souls still manage to find the motivation to do sport. To make sure your training does you good despite the heat, there are a few things you should watch out for. When the weather’s hot, physical exertion can put a lot of strain on your cardiovascular system, and you can end up with sunstroke, heatstroke or circulatory problems.
The body has various cooling mechanisms to keep itself from overheating. One vital way is sweating. It keeps the body cool, but also means you can lose a lot of fluid, which can lead to circulatory problems. So it’s important to drink plenty. Make sure you always take a bottle of water or diluted fruit juice when you do sport in the summer. The rule of thumb is that you should drink at least a litre for every hour you exercise in the heat.
When it’s hot it’s important to wear the right sports clothing. It should be lightweight, light in colour and breathable. Close-fitting functional sportswear is particularly good because it doesn’t prevent you from sweating. Use plenty of water-resistant sunblock – avoid oily or greasy creams because they’ll only block your pores and stop you sweating. Wear something to protect your head and neck.
When it’s hot your heart beats more quickly at the same level of exercise, so in general try to reduce the intensity and duration. Ideal are sports such as tennis and volleyball where you get to take breaks in between bouts of exertion. Whatever happens, don’t do sport in the midday heat. The best time is early in the morning when the temperature’s pleasant and ozone levels are low.
Regardless of your sporting ambitions you should always heed the body’s signals and ease off if necessary. If you experience muscle cramp, headaches, dizziness, weakness or nausea you should stop exercising immediately and find a cool place. Drink plenty and don’t exert yourself any more.