Copper marks the part of the temple you have open.
Rectus abdominis
Abs
Front of the trunk. Braces the spine and curls the ribs toward the pelvis.
Prime mover
Also works it
Cable woodchopObliques · Cable
Push-upChest · Bodyweight
Side plankObliques · Bodyweight
Russian twistObliques · Bodyweight
Pallof pressObliques · Cable
Goblet squatQuads · Glutes · Dumbbell
Cable knee driveHip flexors · Cable
Front squatQuads · Barbell
Farmer's carryForearms · Traps · Dumbbell
Bird dogLower back · Glutes · Bodyweight
BurpeeQuads · Chest · Bodyweight
High kneesHip flexors · Quads · Bodyweight