They are strength training exercises that do not require free weights or machines as the individual’s own weight provides resistance against gravity .
Body weight exercises can improve strength, power , endurance, speed, flexibility , coordination and balance. Body weight training employs simple abilities and techniques such as pushing, pulling, squatting, bending, twisting and balancing.
Movements such as the push-up, the pull-up, and the sit-up are some of the most common body weight exercises. Individuals who are interested in health and fitness but do not have access to equipment will find body weight exercises the ideal choice because they do not require weights or machinery .
Advantages of body weight training include; no costs involved, such as gym membership fees and are a good choice when traveling or on holiday , when access to a gym or equipment may not be possible.
Push Exercises
Lunge, Side Lunges, Mountain Climbers and many more
Push-Ups
Classic Push Up, Handstand Push Up, Chinese Push Ups, Close Grip Push Ups, Military Press and many more.
Pull
Human Flag, Muscle up, Pull
Up, Let Me Ups etc

Core
Crunch,Planches, Plank,
Russian Twist, Leg Raises,
Beach Scissors, Hip Ups,


Legs/Glutes
Calf raises, Squats,fire Hydrants, Dead Lifts, Hip Extension,
Incorporate body-weight exercises into your usual workout routine to do this work-out when traveling or when you do not have access to resistance training equipment.
Under these Body weight training Is calisthenics which is also summation of all the above. Calisthenics are some of the amazing training exercises I have experienced with amazing results.