The ornamental design for an exercisekit, as shown and described.
FIG. 1 is a top plan view of an exercise kit showing our new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a right elevation view thereof, the opposite side being a mirror image of the shown;
FIG. 4 is a front elevation view thereof; and,
FIG. 5 is a rear elevation view thereof.
The broken lines in the drawings depict environmental subject matter only and form no part of the claimed design. The elastic tension strap is shown broken away to indicate no specific length.