Peloton instructor Leanne Hainsby, 35, hosts 'first class' since revealing breast cancer battle

The fitness star, 35, was diagnosed in August after finding a lump in her breast and has since undergone one surgery and 12 weeks of chemotherapy.

Peloton instructor Leanne Hainsby, 35, hosts 'first class' since revealing breast cancer battle

35-Year-Old Peloton Instructor Leanne Hainsby Reveals Cancer Diagnosis

This Popular Peloton Instructor, 35, Has Been Diagnosed With Breast Cancer

Peloton instructor Leanne Hainsby, 35, hosts 'first class' since revealing breast cancer battle

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Peloton's Leanne Hainsby, 35, diagnosed with breast cancer

Peloton instructor Leanne Hainsby, 35, hosts 'first class' since revealing breast cancer battle

Peloton's Leanne Hainsby Diagnosed with Breast Cancer at 35