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An improved weight plate includes a planar body having a central opening for receiving a barbell or dumbbell bar therethrough. The weight plate includes oppositely facing flange members extending partially about the perimeter of the weight plate. The opposed ends of the flange members are spaced fro

An improved weight plate includes a planar body having a central opening for receiving a barbell or dumbbell bar therethrough. The weight plate includes oppositely facing flange members extending partially about the perimeter of the weight plate. The opposed ends of the flange members are spaced from each other and define a gap therebetween. The flange members extend perpendicularly from both sides of the weight plate planar body about the perimeter thereof. The weight plate includes at least one opening formed adjacent the perimeter of the weight plate. The opening is adapted to receive one or more fingers of an average human hand for securely grasping and lifting the weight plate. Adjacent weight plates mounted on a barbell bar are adapted for interlocking engagement.

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1. A weight plate for mounting on a barbell or dumbbell, comprising: a) a weight plate body having a perimeter and a central bore extending through said plate body; b) at least two flange members extending partially about the perimeter of said plate body, wherein each of therefore said flange m

1. A weight plate for mounting on a barbell or dumbbell, comprising: a) a weight plate body having a perimeter and a central bore extending through said plate body; b) at least two flange members extending partially about the perimeter of said plate body, wherein each of therefore said flange members include upstanding portions that project outwardly in opposite directions from said plate body and terminal ends spaced from each other and defining open gaps between the terminal ends; and c) one or more openings extending through said plate body, each of the one or more openings disposed adjacent the perimeter of said body in alignment with an open gap; and wherein the flange members are sized to extend into the open gaps of another of said weight plate to provide interlocking engagement of the weight plates. 2. The weight plate of claim 1, wherein the depth of the open gaps is substantially equal to the height of the flange members.3. The weight plate of claim 1, wherein the width of the open gaps is greater than the width of the flange members.4. The weight plate of claim 1, wherein the interlocking engagement prevents relative rotation between the weight plates.5. The weight plate of claim 1, characterized by the plate bodies of the weight plates having a space therebetween.6. The weight plate of claim 1, wherein interlocking engagement of the weight plates provides separation between the plate bodies of the weight plates.7. The weight plate of claim 6, wherein the separation is substantially equal to the height of the flange.8. The weight plate of claim 1, wherein the weight plate is cast, rubber coated or polyurethane coated.9. The weight plate of claim 1, wherein the bore includes an integrally formed collar adding axial length to the bore.10. The weight plate of claim 1, wherein the one or more openings include edge surfaces which are rounded.11. The weight plate of claim 1, wherein the flange members are equally spaced about the perimeter of said weight plate body.12. The weight plate of claim 1, wherein the weight plate comprises two openings.13. The weight plate of claim 1, wherein the weight plate comprises three or more openings.14. The weight plate of claim 1, wherein there is an opening positioned adjacent each open gap.15. The weight plate of claim 1, wherein there is an opening positioned adjacent fewer than each open gap.16. A weight plate for mounting on a barbell or dumbbell, comprising: a) a weight plate body having a central bore extending through said weight plate body; b) at least two radially extending flange members extending partially about the perimeter of said weight plate body, wherein each of said flange members include upstanding portions which project outwardly in opposite directions from said plate body said flange members defining gaps there between; c) at least one opening disposed adjacent the perimeter of said body generally aligned with at least one of said gaps; and d) wherein said flange members are adapted for locking adjacent weight plates against relative rotation. 17. A weight plate for mounting on a barbell, comprising: a body in a first plane, said body having an outer perimeter and said body having an inner bore extending through for coupling to said barbell; at least two flange members, each having a first dimensional component in a plane perpendicular to said first plane, said first dimensional component entirely existing in an area proximate to said outer perimeter, at least one opening extending through said plate and adjacent to said outer perimeter wherein at least a portion of said at least one opening is substantially aligned with at least a portion of a gap defined between two of said flange members; wherein said flange members are adapted for locking adjacent weight plates against relative rotation. 18. A weight plate for mounting on a barbell or dumbbell, comprising: a) a weight plate body having a central bore extending through said weight plate body; b) at least two flange members extending partially about the perimeter of said weight plate body, wherein said flange members include upstanding portions which project outwardly in opposite directions from said plate body; c) at least one opening disposed adjacent the perimeter of said body and not disposed entirely within a flange member wherein at least a grippable portion of said at least one opening is substantially aligned with a gap defined between two of said flange members; and d) wherein said flange members are adapted for locking adjacent weight plates against relative rotation.