The 30-Days Fitness Challenge is designed to develop all muscle groups of your body, and what's more, you train and practice every day. So, you'll have the opportunity to reshape your body and allow your muscles to evolve.
The question is: how does it work? Each day you have various mini-challenges. So, your body will have different exercises and your thews will be actively involved. Your main goal is to get stronger and healthier in a month but not get bored.
You should focus on a new goal every week. On the first day, you can do such workouts as feet-elevated glute bridge, step-up shuffle, split squat. The second and third days may be devoted to single-leg calf raising and jumping. Half-kneeling single-arm press (right, left) will be successful for total-body toning.
Here we have an example of a 30-days fitness challenge you really need to try.