Why do spinal discs degenerate?

Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?

Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?

Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?

Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?Why do spinal discs degenerate?