A yoga balance trainer includes a main frame 10 and a seat assembly 20. The main frame 10 includes opposite bottom and top boards 11, 12, and a spring unit 13 connected between the bottom and top boards 11, 12 so as to permit movement of the top board 12 relative to the bottom board 11. The seat assembly 20 includes a supporting leg frame 21 secured to the top board 12, and a seat 22 secured to the supporting leg frame 21. When the user sits on the seat assembly 20 and moves to and fro, the top board 12 moves relative to the bottom board 11.
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