Matt Furey have been around for a long time. He highlights the Hindu Royal Court exercises (3 movements) which I have used in the past. Have suggested them, on & off, on GB a number of times before. It's good stuff, for getting into respectable shape, with regards to stamina (endurance + strength). Guy's in the joint do similar bwt exercises.
Think the Royal Court exercises on still on the internte somewhere. They are Squats, Dive bombers (there called Hindu pushups) and neck bridges. Unlimited reps, depending on you. The neck bridge, though not for everyone, is a great movement. Too many BB'ers, even some of the outstanding Pro's, are really pencil necks, giving an honest look at them.
Furey has many other bwt exercise in his protocol, not just the Royal Court. Though India offers some very intense exercises and workout, some of them were borrowed from the old British army training manuals. Just to note, the old Prussian, British and Germany/Austrian military training manuals (over 100 years old) were some of the toughest one's around.
Old time Hindu wrestlers were knows for doing hundreds to thousands of bwt squats & pushups (dive bombers) in long training session. Usually to the beat of a drum. Kings and the super wealthy in India (before the British destroyed most of their culture) have stables of wrestlers. Good Luck.