Tai Chi
What is the best workout to combine with martial arts?
To burn major calories, Tae Kwon Do, and Mui Tai Kick boxing, Brazilian Ju Jitsu (ground work is a calorie killer).
For stretching and relaxing Tai Chi
MMA workouts consist of Brazilian Jiu Jitsu, No Holds Barred (NHB) Fighting, Boxing, Kickboxing, Thai Boxing, Wrestling, Weight Training, Etc.
To enhance your martial arts training I would strongly suggest using calisthenics and general bodyweight routines. There are many to choose from but it doesn't have to be complicated: Chins, Dips, Pushups, Squats. Two or three times a week for 20-minutes total. Just do a set of each rest a minute and repeat for a total of 20-minutes. Each time try to increase the total number of reps or sets you were able to do.
John www.dailykungfuworkout.com