Washington (CNN) Michigan Gov. Gretchen Whitmer on Friday extended her stay-at-home order through May 15 while relaxing restrictions so some businesses can reopen and the public can participate in more outdoor activities like golf and motorized boating.

Whitmer, a Democrat whose national profile has risen in recent months , has been under heavy pressure from Republicans and conservatives in her state to ease the stay-at-home guidelines, which are among the strictest in the nation.

"We will consider this the preliminary stage of economic reengagement," said Whitmer at a press conference Friday, adding that these changes will be dependent on the coming days. "If we continue to see our numbers decline, we can responsibly consider additional steps we can take. If we see an increase, we may have to be nimble enough to go backward on occasion."

The Democratic governor's order says people are now required to wear face coverings in enclosed public spaces such as grocery stores if they can medically tolerate it.

The order will also allow landscapers, lawn-service companies, plant nurseries and bike repair shops to resume operating, subject to social-distancing rules. Big-box retailers will no longer have to close off garden centers and areas dedicated to selling paint and carpet.

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