He was pronounced dead at 11:50 a.m. at St. Josephs Hospital in Wayne.
Witnesses say he had just put the weights down after completing a set of exercises when he collapsed.
A school official said Ramos was a special needs student enrolled in the school's automotive technology program.
The Passaic County Prosecutor's Office said all indications are that the teen died of natural causes.
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Information from: The Record of Bergen County, http://www.northjersey.com
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