Exercising and walking in the heat is far more dangerous than in most cold weather conditions.

When the temperature is above 80 degrees and the humidity is higher than 60 percent, the risk of heat stress is greater.

If the temperature is 90 degrees or above and humidity is 40 percent, it is best not to walk and exercise outdoors. This is especially true for cardiac patients or other high-risk individuals.

Early morning, when the temperature is usually at its lowest level, may be the bet time for outdoor activities.

The precautions and rules are simple. If the temperature is high, we need to cu...