McDonald's is making another effort to emphasize fitness and health by including fitness trackers in its Happy Meals.

Engadget reported that a Fitbit-like toy called Step-It will be available for four weeks in children's Happy Meals in the U.S. and Canada.

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The Step-It fitness trackers, which come in six  colors, blink depending on the level of activity of the child wearing them.

"Step-It is in line with McDonald's general philosophy for Happy Meal toys, which is to make toys that encourage either physical or imagination-based play," McDonald's Canada Senior Marketing Manager Michelle McIImoyle said in a statement to CityNews.

But according to The Associated Press, the fitness trackers may not last very long.

New York locations of the fast-food chain have stopped including the trackers in Happy Meals because the company has gotten some reports of potential skin irritations.

Terri Hickey, a McDonald's representative, told The Associated Press in an email that McDonald's is "fully investigating this issue" and restaurants are "offering our youngest guests an alternative Happy Meal toy."