Holly recommended this challenging move, which combines a Spider-Man plank (aka Creepy Crawler) with a push-up for intense core engagement. It hits your obliques and abs while working your arms too. You can modify by dropping down to your knees, Holly said.
- Start in high plank.
- Bring your left knee to your elbow while lowering into a push-up.
- Place your left foot back on the ground as you push back up into high-plank.
- Repeat on the other side to complete one rep.