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Bosu Ball Step-Up with High Knee

Step by step instructions, muscle activation and variants for the Bosu Ball Step-Up with High Knee.

MediumGlutesQuadriceps

About this exercise

The Bosu Ball Step-Up with High Knee is a dynamic lower-body and balance exercise that combines a step-up onto the unstable surface of a Bosu ball with an explosive high knee drive. The instability challenges the leg muscles and core while improving coordination and proprioception.

How to Perform

  • Stand facing the flat side of a Bosu ball (dome side up) placed on the floor
  • Step one foot onto the center of the dome and press through that heel to stand up onto the Bosu ball
  • As you reach full extension of the standing leg, drive the opposite knee up toward your chest
  • Control your balance at the top for a brief moment
  • Lower the raised leg back to the floor, then step the lead foot off the Bosu ball
  • Repeat leading with the same leg for all reps, then switch sides

Muscle Activation

Primary
GlutesQuadriceps
Secondary
HamstringsCalvesCore

About the Bosu Ball Step-Up with High Knee

The Bosu Ball Step-Up with High Knee is a foundational movement that builds strength and muscle through controlled, progressive overload. Train it 1 to 2 times per week with 3 to 5 working sets per session, gradually adding weight or reps as form holds up.