The alternating sliding one arm push up is an excellent pushup progression towards completing the one arm push up.
Master the One Arm Push Up, PROGRESSIONS
27 Best Oblique Exercises for Men
10 Essential Bodyweight Exercises, Fitness
qph.cf2.quoracdn.net/main-qimg-ec37aa3b408c449e4cd
Are bridge push-ups a good alternative for pull-ups/posterior chain? - Quora
How To Do a One Arm Push-Up
100 Push Up Variations For Chest, Triceps, And Shoulders - Live Lean TV
Full Body Circuit Workout to Strengthen Legs, Abs, and Arms
How To Do a One Arm Push-Up
Full Body Circuit Workout to Strengthen Legs, Abs, and Arms
20 Minute No Equipment Toned Arms Workout - Live Lean TV
14 Types of Push-Ups—and How They Help You
One-Arm Push-up with an Alternating Leg Lift on the Chair