1. Exercising apparatus comprising an exercising unit, suspension means for suspending said unit from an overhead support, means engaged with said exercising unit for effecting a vertical adjustment thereof, said suspension means comprising a plurality of elongated rigid members, each member including pivot means at one end thereof pivotally affixing the member to the exercising unit and pivot means at the second end thereof for pivotally engaging the member with an overhead support, said exercising unit vertically adjusting through an arcuate swinging of the suspension members about the second ends thereof, said exercising unit comprising a pair of elongated laterally spaced parallel bars, said suspension members engaging with said bars at longitudinally spaced points therealong, said suspension members being orientated in pairs, each pair having the members laterally aligned with one member pivotally engaged with each bar, the members of each pair of suspension members diverging upwardly relative to said exercising unit and including rigid brace means transversely therebetween, the means for effecting a vertical adjustment of the exercising unit comprising a winch unit, and cable means engaged between said winch unit and said exercising unit, said exercising unit including a plurality of transverse extending rungs affixed to said laterally spaced bars, said rungs being laterally spaced from each other along at least a major portion of the length of said exercising unit, and an exercising attachment and means for releasably securing said exercising attachment to said exercising unit so as to depend therebeneath and be vertically adjustable therewith, said exercising attachment comprising a parallel bar unit, said parallel bar unit including a pair of laterally spaced parallel bars rigidly affixed, at the opposite ends thereof, to a pair of vertically extending upwardly directed members, said means for releasably securing said exercising attachment comprising bar engaging clamp means affixed to the upper ends of said parallel bar unit vertical members for clamping engagement about the exercising unit bars.

4. Exercising apparatus comprising an elongated horizontally orientated exercising unit, a plurality of rigid suspension members positioned at longitudinally spaced points along said elongated exercising unit, each suspension member including pivot means at a first end thereof pivotally affixing the member to the exercising unit and pivot means at the second end thereof for pivotally engaging the suspension member with an overhead support, said exercising unit being vertically adjustable through an arcuate swinging of the rigid suspension members about the second ends thereof with the exercising unit pivoting about the first ends of the suspension members in a manner so as to maintain the horizontal orientation thereof as the exercising unit is vertically adjusted, and means for vertically adjusting said exercising unit, said exercising unit comprising an exercising ladder including laterally spaced parallel sidebars interconnected, along substantially the full length thereof, by transversely extending rigid rungs.

5. Exercising apparatus comprising an elongated horizontally orientated exercising unit, a plurality of rigid suspension members positioned at longitudinally spaced points along said elongated exercising unit, each suspension member including pivot means at a first end thereof pivotally affixing the member to the exercising unit and pivot means at the second end thereof for pivotally engaging the suspension member with an overhead support, said exercising unit being vertically adjustable through an arcuate swinging of the rigid suspension members about the second ends thereof with the exercising unit pivoting about the first ends of the suspension members in a manner so as to maintain the horizontal orientation thereof as the exercising unit is vertically adjusted, means for vertically adjusting said exercising unit, an exercising attachment and means for releasably securing said exercising attachment to said exercising unit so as to depend therebeneath and be vertically adjustable therewith, said exercising attachment comprising a parallel bar unit, said parallel bar unit including a pair of laterally spaced parallel bars rigidly affixed, at the opposite ends thereof, to a pair of vertically extending upwardly directed members, said means for releasably securing said exercising attachment comprising clamp means affixed to the upper ends of said parallel bar unit vertical members for clamping engagement with the exercising unit.

7. Exercising apparatus comprising an elongated exercising ladder including laterally spaced parallel side bars interconnected, along substantially the full length thereof, by transversely extending rigid rungs, a plurality of suspension units affixed to said ladder at longitudinally spaced points therealong, each suspension unit including a rigid suspension post pivotally affixed at the lower end thereof to each side bar, each post including means at the upper end thereof for pivotal engagement with an overhead support, the suspension posts of each suspension unit diverging upwardly relative to the ladder, said ladder being horizontally positionable and vertically adjustable through the suspension members in a manner so as to maintain the horizontal orientation thereof, and means for vertically adjusting said ladder.