Workouts are the exercises done to build muscle strength. High-intensity cardio and strength-building are common at-home workouts that might include a 21-day or 60-day "challenge." Thus, option C is correct.
<h3>What is body fitness?</h3>
Fitness is the term used to describe the capability of the body to perform the physical exercises that leads to increased performance, strength, endurance, etc. The fit body is protected from various diseases like obesity, diabetes, stroke, high blood pressure, etc.
The fitness exercise including strength-building exercises and high-intensity cardio focuses on overall body wellness. This can be achieved at home by following the 21-day or 60-day "challenge." As this method is highly effective and self-regulatory to be performed by an individual to maintain their health and wellness.
Therefore, option C. 21-day or 60-day "challenge" is the best common at-home workout.
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