(third-person singular simple present bulks up, present participle bulking up, simple past and past participle bulked up)
"bulk-up." YourDictionary, n.d. Web. 15 January 2019. <https://www.yourdictionary.com/bulk-up>.
bulk-up. (n.d.). Retrieved January 15th, 2019, from https://www.yourdictionary.com/bulk-up
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