No. A lacrosse ball is not big enough to reach the psoas or the iliacus. While a larger ball may be able to reach the psoas in a diffuse way, it still will not be able to target the iliacus on the inside of the pelvic bone.
The patented design and use of the Mark allow for firm, direct, and precise pressure to both the psoas and iliacus muscles from many different angles.
Once you try it, you will find that it is able to target the psoas and iliacus in a way that no ball or other self-release technique or tool can.
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