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Study Reveals Curls Boost Bicep Growth Over Rows

10/9/2025

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Story summary
  • Pavel Tsatsouline's 'Grease the Groove' promotes lifting at 75-85% of max, frequently, to build strength without fatigue.
  • A recent study found rows are efficient, but bicep curls yield greater growth in the lower biceps.
  • Curls yielded a 19% increase in muscle thickness after a workout, vs. 13% from rows.
  • Holstine-Rao notes strength work can use bodyweight, not just heavy weights.