A support block for supporting the weight of a user above a support surface during exercise includes a support body having a first side, a second side and a support edge. In one embodiment, the first side and/or the second side can be substantially planar and/or can have a substantially similar configuration as one another. The support edge can be substantially orthogonal at least one of the first side and the second side. The support edge includes a curved first section that rollingly contacts the support surface while the support body supports part of the weight of the user above the support surface. The support edge can form at least approximately a 30 degree arc of a circle. In another embodiment, the support body includes a beveled edge positioned between the first side and the support edge. In one embodiment, the support body can be formed substantially from an ethylene-vinyl acetate (EVA) foam material.