Skullcrusher – This exercise gets its name because if you will drop the weights, then you are more likely to injure your skull due to the positioning of the weights.

How to do

• Lie flat on the floor or a bench, or an exercise ball with your face up with legs comfortably on each side of the floor. So, select a position which gives comfort and stability.
• Tighten your core, hips, and glutes.
• Hold a 5 to 15 pound dumbbell in each hand.
• Start with hands at ears, elbows pointed toward the ceiling.
• Extend weights toward ceiling by straightening elbows.
• Do 12 to 15 reps.

Overhead Triceps Extension

These standing dumbbell overhead triceps extension works on your triceps part primarily. The secondary muscles being the Trapezius (Traps), Extensors, Erector Spinae, Rotator Cuff, Anterior and Medial Deltoids (delts), Posterior Deltoids (delts), , Serratus Anterior, Rectus Abdominus (abs), Transverse Abdominus, Obliques.

How to do