UPDATED: 1/22/2013 11:20 a.m.

CHICAGO (CBS) — A heart patient is alive today, thanks to strangers who performed CPR.

A 70-year-old man was working out at Inwood Athletic Club in Joliet when suddenly he collapsed and appeared to be in full cardiac arrest, WBBM Newsradio’s Regine Schlesinger reports.

Luckily for him, several others at the gym knew CPR and went to work.

Oncology nurse Nancy Lucaora happened to be there, doing laps on the track.

“I saw a lot of people running towards one corner of the exercise floor and I looked and saw a man on the floor,” she said.

Lucaora, another nurse, an off-duty firefighter and a lifeguard all began working on the man.

“I couldn’t feel a pulse so I started chest compressions,” Lucaora said. “They brought the defibrillator. We got him hooked up. We waited for it to analyze and it said to shock. So we gave him one shock.”

Together they revived the man.

By the time the ambulance got there, he was said to be talking and responsive.

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