What are the limits to it ? Exceptions etc. Context i saw vsauces " power of suggestions " video. Is the video scripted or was the kids conditions just not real like i can understand the girls condition may be cured through placebo but come on adhd and migraines immediatly cured ?
It does sound dubious, but there are good studies on it. You aren’t going make great gains, it just shows improvement that going without doesn’t. This is why it is also recommended to really focus on lifting and be mindful of the exercise you are doing.