It’s a tough, demanding job. Battling wildfires in the bush requires the stamina of an athlete.  Carrying thirty-kilogram hoses into the bush can burn up to 5000 calories a day.

That’s why fire rangers in northern Ontario have teamed up with Laurentian University researchers in an innovative project monitoring stress, fatigue and fitness to protect them against injury.

For more watch Into the Fire on The Nature of Things.

Additional footage courtesy of Christine Rosche, Ont. Ministry of Natural Resources and Forestry

The Wild Canadian Year

Wild Canadian Year

Visit our website to watch the series online, discover extra behind-the-scenes stories and view Canada's nature scenes in 360. Visit Wild Canadian Year

From CBC Kids

The Nature of Thingies