Hmmm ... interesting topic.
I'm 66, and have been doing yoga on/off since I was a teenager. Have always enjoyed it, although I can't do some positions now that I was able to do in the past. I really see my flexibility and strength in the context of yoga declining with age.
However, I don't view yoga and meditation as the same thing - I suppose one can meditate while doing yoga (or running or biking or swimming), but I don't consider that meditation.
There are many schools of meditation - it is actually quite a complex topic, which I think can easily discourage people from trying it. Which school of meditation is "right"? Why do they almost all have Indian names, which add to the confusion?
Some practices use a mantra ("TM", or transcendental meditation), some use breath, some use body scans (focus on bodily sensation), some use loving kindness, some use nothing at all ... just watching your thoughts. Some seem to suggest that meditation is part of a religion such as Buddhism, others are secular.
I struggle with meditation, and I've spoken with many friends and acquaintances who do as well. Some people seem to take to it easily, for others its torture. For me it's extremely difficult.
My daughter has done a number of 10 day "sits" at Vipassanna. However, this word alone shows how confusing the world of meditation can be. Vipassana can refer to either a mode of meditation or an organization with centers all over the world where people do "sits" of various lengths.
My daughter persuaded me to do a 10 day sit at a Vipassana center in December 2016. I found it extremely difficult, and left on day 6. Many people report finding a ten day Vipassana sit to be one of the most difficult undertakings of their life. You meditate at least 3-4 hours a day. You agree to bring no reading materials/no computers. The first 9 days are silent. You are completely alone with yourself 24 hours a day.
It is very challenging!
There are many smartphone apps that help with guided meditation and are good for
"beginners". I really like them, and they tend to make meditation easier. I tried Headspace (mentioned here), but wasn't very impressed with it - and, it is costly.
However, new meditation apps seem to appear often. One that I started using recently is called simply Oak, developed by Kevin Rose. It is free, and seems every bit as good as Headspace. It is free, and hopefully will stay that way. You can read about it here:
https://medium.com/@kevinrose/oak-medit ... 8478d9fc00
There are many excellent books on meditation. If I had to recommend one author, it would be Pema Chodron.
68 yrs, semi-retired lawyer, 50/40/10 s/b/c, 70/30 dom/int'l. Plan: 4% WR until age 70, 3% when social security kicks in. Boglehead since day 1 (and M* pre-BH site) under diff names