They should drink plenty of water, and get adequate rest and relaxation.

白羊座要多喝水，并注意适当的放松。

youdao

YOU already know that if you exercise outside on hot and humid days, you should drink plenty of water.

众所周知，在湿热的天气下锻炼，应大量补充水分；

youdao

To keep hydrated, you should drink plenty of water 20 minutes before, throughout and after your workouts.

保持身体水分充足，你应当在运动前、中、后各20分钟时补充水分。

youdao

Doctors say people with such problems should rest quietly in a cool place and drink plenty of water.

VOA: special.2010.07.27

Forecasters say people should limit outdoor activity during the hottest portions of the day, wear lightweight clothing, drink plenty of water and be watchful for signs of heat exhaustion, which include heavy sweating, pale and clammy skin, weak pulse, fainting and vomiting.

CNN: Heat advisories issued to states dwindles to 15