1) You’ll need weights for this exercise — I hold two weights in my hands that are each between 5 and 8 pounds, depending how hardcore I’m feeling You can also just hold one heavier (between 10 and 15 pounds) weight.
2) Stand with your legs spread apart, one in front of the other, preparing to do a lunge. Lower your arms behind your head, holding the weights.
4) Lift yourself back up, lowering your arms again into the start position. Repeat about 10 to 12 times, then switch and do the other side!
Here’s a video of me demonstrating it!
Let me know how it goes!