FIG. 1 is a front perspective view of a treadmill in accordance with my design;
FIG. 2 is a front plan view thereof;
FIG. 3 is a rear side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is an enlarged view of a circle portion 8 of FIG. 3; and,
FIG. 9 is an enlarged view of a circle portion 9 of FIG. 4.
The broken lines are directed to environment and are for illustrative purposes only. The broken lines form no part of the claimed design.