The following links are to documents from Smart Play. They provide recommendations for how to warm up, how much drink to intake during a game or training, and how to recognise and treat heat stress. 

Warm up 

Drink up 

Heat Stress

The following link is from Sports Medicine Australia and documents how to exercise safely in summer.

Exercise safely this summer

All Smart Play documentation and other information can be found at their website:

http://www.smartplay.com.au