You are fabric dye. ("color-fast" dyes do not "run", or bleed into the rest of the fabric, whereas dyes that are not "color-fast" will "run", making your nice white shirt look all blue from those new...
Practice sprinting. Do short sprints, do longer sprints, do them in sets with jogging in between or do them in sets with breaks in between. Do a lot of them. Maybe do some sprinting up hills....