PNF stretching is a more effective technique for increasing your range of motion than static or ballistic stretching.

PNF Stretching

Proprioceptive Neuromuscular Facilitation; a stretching technique used to enhance both active and passive range of motion.

Range Of Motion

A joint's total capacity for movement, typically involving its ability to extend and bend.

Static

Relating to or characterized by a lack of movement, change, or development.