Calisthenics is a form of exercise that uses bodyweight movements to build strength, flexibility, and endurance. These workouts can be performed anywhere and require minimal or no equipment. Here's a basic description of a calisthenic workout:

1. **Warm-Up** (5-10 minutes):
- Jumping jacks
- High knees
- Arm circles

2. **Main Workout**:
- **Push-Ups**: 3 sets of 10-15 reps
- **Pull-Ups** (if a bar is available): 3 sets of 5-10 reps
- **Dips**: 3 sets of 10-15 reps
- **Squats**: 3 sets of 15-20 reps
- **Lunges**: 3 sets of 10 reps per leg
- **Plank**: 3 sets of 30-60 seconds
- **Mountain Climbers**: 3 sets of 20-30 reps per leg

3. **Cool Down** (5-10 minutes):
- Static stretching (hold each stretch for 20-30 seconds)
- Deep breathing exercises

This routine targets multiple muscle groups and can be adjusted for different fitness levels by changing the number of reps or sets, or incorporating variations of the exercises.