Just wanted to point out this site:
https://www.woss.com/anchor-system/
I was looking for a less expensive solution to TRX's pricey $40 anchor
I have a 1950's ranch-style house (no basement) where I converted a bedroom into a workout area. Using a stud-finder tool I installed a 'Folding Pad Eye' anchor on the wall and also on the ceiling into an overhead ceiling joist (through the dry-wall). Each holds me just fine and I'm no 'light-weight'! Not to mention much cheaper than TRX's solution
I also have taken the TRX to the neighborhood playground/picnic shelter, A concrete anchored T-shaped outdoor clothes line, and my office area has some mature trees that I've anchored around the main trunk about 6' off the ground.