Fifer Scissors: the ab exercise you need to try and perfect
P90X-Insanity Hybrid, Day 29: Chest, Shoulders & Triceps; ARX | Bodamer Blog
5 (Fifer Scissors)_哔哩哔哩_bilibili
Heels to heaven and fifer scissors with a twist are two staples in my “Abs with Andrew” class. Lower abdominals is the toughest area to see strong... | By Abs with AndrewFacebook