a) a central grip having a longitudinal axis and

b) a plurality of peripheral handles consisting of an odd number of handles, each peripheral handle having a peripheral grip portion extending between pairs of first and second radial portions, said first and second radial portions extending outward from said central grip, said central grip having a periphery at least ten percent greater than the periphery of at least one of the peripheral grip portions, and wherein the central grip has an outer surface comprising a plurality of curved sidewalls, each sidewall facing a respective peripheral grip portion.