By Macaela MacKenzie If anyone knows grit, it’s Chaunte Lowe. The 37-year-old high jumper has competed in four Olympics through three pregnancies. She brought home a bronze medal in 2008 and still holds the American record for the women’s high jump (both indoor and outdoor). And now she’s training for a mind-boggling fifth Olympic appearance—while facing a breast cancer diagnosis, chemotherapy, and a…
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