0:08
Gavyn Berntsen Heels to Heaven
Fit Life After 40
0:07
Gavyn Berntsen Swiss Ball Roll Outs
Gavyn Berntsen Swiss Ball Pikes
0:06
Gavyn Berntsen Swiss Ball 1 Leg Balance
Gavyn Berntsen Wood Choppers Top Bottom
Gavyn Berntsen Wood Choppers Bottom Top
0:11
Gavyn Berntsen V Up Roll Ups
Gavyn Berntsen Twisting Pistons
0:04
Gavyn Berntsen Plank March
Gavyn Berntsen toes to bar
Gavyn Berntsen superman planks
Gavyn Berntsen superman plank regression
Gavyn Berntsen russian twist with med ball throw
0:10
Gavyn Berntsen Land mines
Gavyn Berntsen hand to toe touch
0:05
Gavyn Berntsen fighter knee
0:09
Gavyn Berntsen decline reverse crunch
Gavyn Berntsen crunchy frog
Gavyn Berntsen Decline Plank
4:11
Strengthen your entire core in just one simple move!
9:56
Doing a weighted crunch maybe making it easier for you?
Reverse 'snow angels'
Plank Walk Out
Ab Roller (knee version)
Gymnast Abs
Y Raise Back Extension
In and Outs - Bench
0:13
Swiss Ball Crunch (Wall Supported)
Gavyn Berntsen - Plank: Single Kneen Tucks
Gavyn Berntsen - Isometric hold (back)
3:20
Four Point Kneeling Dumbbell Row | Personal Training For People Over 40
