Nikki Blackketterのインスタグラム(nikkiblackketter) - 4月18日 01時59分

Working on them #glutes. Gotta love that good ol' hamstring curl machine. So many secret uses, lol. It's also a full body exercise because you have to keep your core tight and everything focuses so the pad doesn't slip. So hard!
#legday #muscle #lift

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