Quad muscles
My feeling is that your legs are going to be sore after today's workout. The grouping of the quad dominant exercises was intentional as I like to challenge those big fat burning muscles.
I also like to have these leg exercises in the program as a reminder to you that you can get a great workout in by using your own bodyweight.
My suggestion is to do some foam rolling in the quad and calf area, plus these stretches.
Side Quad Stretch
Gently pull ankle or forefoot towards your butt. Hold for 5-10 seconds. Repeat 2-5x.
Standing Quad Stretch
Gently straighten your hip by pulling the knee backward until a stretch is felt.Hold 5-10 seconds, and repeat 2-5 times.