Abstract: A bow body (8) comprising a frame provided with a grip (12), the frame having a first and second arm (16, 20) which extend from said grip (12) towards a first and a second end (24, 28) respectively, said ends (24, 28) being fitted with attachments (32) for associable limbs (36) suitable for supporting a string. The frame comprises at least one pocket or lightening (40) positioned on at least one of said arms (16, 20). Advantageously, the bow body (8) comprises at least one insert (44), applied to close the pocket (40) so as to form a wind bracing for the pocket, the insert (44) constituting a stiffening of the frame at the point of the pocket (40).