Muay Thai is a great full body workout. Apart from giving you greater physical strength, training Muay Thai would develop your mental strength, so you'll be strong enough to overcome obstacles inside and outside the gym.
The art incorporates the use of knees, elbows, shins, and hands. This allows the practitioner to use all the weapons available to the human body in kicking range, punching range, and the clinch, making it effective in all ranges of standup fighting unlike most other striking based martial arts