what is the name of this exercise machine nunes is using to exercise punches?
After having read your question, I was interested in finding out what type of equipment is being used in the picture you posted. While I'm not an MMA fan, I am interested in different types of exercise equipment. So, with a little bit of detective work, I was able to determine that Amanda Nunes trains out of the American Top Team Facility in Coconut Creek Florida. The screen cap you posted does not provide a full perspective of machine, and, with it's position near other treadmills, I initially suspected that it was some form of tread stepper. However, after watching her work out, I realized that she trains exclusively for her sport using specific equipment. That led me to investigate further and I found this:
And, since gyms are typically organized with similar equipment grouped together on the floor, I took a chance that the machine was from the company that makes Real Runner and it was.
The machine is actually called a Torque Machine that was designed to...
“work the whole body through a complete push and pull resistance motion, utilizing resistance in the modes of both flexion and extension. “
She's obviously adapted its usage to fit her training for MMA.