The alternative is explained here: How to ‘Grease the Groove’ and Exercise Easy – The Atlantic.
If you don’t know anything about getting stronger, you should read this. You should also read it if you are someone who knows about sets, reps, leg day, and other such things. It may not be the way to reach peak bodybuilding, but it could be just the thing for people who can’t seem to find a good way to get stronger.