No pull up bar? Can't use a door frame? Here are some ideas : r/bodyweightfitness
The 3 best pull up bars according to Reddit - Trusty Spotter
Chest to Bar Pull-Ups – Muscles Worked, How-To, Benefits, and Alternatives – Fitness Volt
Arnold Schwarzenegger shared his home workout routine on Reddit
Are doorway pull up bars safe? : r/bodyweightfitness
https://www.reddit.com/r/bodyweightfitness/comments/3geqew/have_you_made_your_own_bodyweight_fitness/ | Diy pull up bar, Home workout equipment, A frame swing
4 Reasons To Stop Doing Pull-Ups | Seriously Strong Training