Being too strong might restrict a joint's range of motion because excessive muscle strength can lead to increased muscle tension and stiffness, which reduces flexibility and the joint's ability to move freely. Large or overdeveloped muscles can physically limit the joint's motion by restricting how far it can move. Additionally, increased muscle stiffness from strength training or tight muscles can create resistance to joint movement, which restricts range of motion. This tightness can also compromise the balance between joint stability and mobility, causing restricted or stiffer joints that move less freely than ideal. Thus, being too strong without maintaining flexibility can limit the overall range of motion in a joint.