What is "reppies"? Is it used commonly?
Native speaker’s answer
Rebecca
"Reppies" here is a made up, longer word for "reps" which stands for "repetition" and refers to a set of repeated steps in an exercise. So when he says "just 10 more reppies", the usual way to say this would be "just 10 more reps". However, this show likes to make up their own words.