Four easy miles for today's run. This is an increase of one mile from last week's Monday workout. I'm trying to get you back to a steady-state level, and one way to do it is to institute slight mileage increases.
Sudden increases offer a route to injury.
Don't forget to warm-up by jogging a mile or so and stretching. Cool down afterwards too. Next week, I'll ask you to do eight. The pattern continues. Run 3 x mile, jogging 3-5 minutes between.