Try not to move your feet at all throughout. Keep your knees aligned directly above your ankles when you are sitting, and do not allow them to extend beyond your mid-foot as you stand.
You can try using a small pillow, yoga block, stuffed animal, or book.
If you can get through 15-20 reps without feeling worn out, move up to slightly larger weights. As you continue to work out, move your weights up in 2 pound (0. 91 kg) increments approximately every 8 weeks.
