There are a bunch of at-home workouts that are a great stand in if the gym just isn’t going to happen. Here are some favorites:
Sculpt a Better Butt by SarahFit
PopSugar 20-Min Power Plank Workout
15-Minute Workout Anywhere, Anytime Workout
And if you want to take it one step further, here’s a piece I wrote on how to build a mini at-home gym.