Key points from article :
Scientists are searching for "exercise mimetics" that mimic the benefits of exercise without actually doing it.
One approach is to inject blood plasma from young, healthy exercisers into older people.
This is being tested in a clinical trial called ExPlas, focusing on people with early-stage Alzheimer's.
Another approach is to target specific hormones released during exercise, like irisin.
Exercise pills are unlikely to replicate all the benefits of exercise, but they could still be valuable for specific health conditions.
Some researchers are skeptical about the idea of exercise pills, arguing that people should just exercise instead.
Clinical trials are ongoing for several exercise mimetics, and it could be 10 years or more before any are approved for widespread use.
