I've heard that the perfect form of bodyweight exercises need to be slow. For instance, in pull ups, I have to go up in 2 seconds, pause a second at the top position and then go down in 2 seconds.
Which goal does that technique help, muscle gain or endurance ?
In another words, If I can do 20 fast movement push ups and I want to build more muscle using push ups. Will I gain muscle if I used the technique mentioned above ?