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The US Marines are starting to pump iron again, as gyms at some military installations have reopened with strict new safety measures amid the coronavirus pandemic.

Fitness centers from North Carolina’s Camp Lejeune to California’s Camp Pendleton to Quantico in Virginia have reopened their doors for active-duty Marines and first responders, the Marine Corps Times reports.

At Quantico’s Barber Physical Activity Center, visitors are restricted to a one-hour workout and face masks are required. Equipment must be wiped down after each use and social distancing guidelines are in effect, a spokeswoman said.

“We want the Marines and residents of Quantico to be able to stay fit and strong, but also maintain the safety and health of our community on base,” Quantico spokeswoman Capt. Allison Burgos told the outlet in a statement.

At Camp Pendleton, High-Intensity Tactical Training centers reopened Friday, but Marines were advised to practice 10 feet of social distancing and not to use locker rooms, showers or saunas, according to a Marine Corps Community Services website for the California base.

“Your safety is our top priority,” the website reads. “Please wash or sanitize hands prior to entering.”

Like at Quantico, face coverings are required and workouts are capped at 60 minutes at Camp Pendleton, according to the guidelines.

Active-duty Marines at Camp Lejeune were also permitted back at fitness centers on Friday, but not all gyms across the military branch have reopened. Military personnel should contact base officials for additional details, the Marine Corps reports.