which is an important indicator of a person’s aerobic fitness level. Sauna-suit-wearing exercisers averaged 11.7 increase in VO2max from their baseline levels, compared with a 7.3 percent ...

SAN FRANCISCO – At 240 pounds, San Francisco aerobics teacher Jennifer Portnick says her heft unfairly weighs her down. "Everyone deserves a chance who has the skills to do the job," she said.