Actually, I don't care about the Tinder study. did the most intensive study to date and results were similar. But you ways you put yourself out there better be because you want to because those aren't best ways to meet attractive partners. Yoga classes are full of women bending over in front of your drooling eyes and most aren't going to pick a lover from the class. Same as Karate classes or dance classes or etc, etc. Gyms stopped being a pick up joint in the 80's.
Best is dating theme meetings and just hope you are the top 10-20% for those girls. Of course you can raise your % by building muscles, getting good hair cut and wearing attractive clothing. Increase appearance= increased looks. Remember ANY guy can be the top 20% to a gal if he meets the right gal.
I don't really agree with that. A lot of people meet in classes. One of my ex girlfriends goes to a different yoga class and her friend met her boyfriend there. My yoga class is mostly older women though. What do you mean by dating theme meetings? Like speed dating? Most people I know are meeting their partners by going to parties, BBQ's, activities like bowling, concerts, festivals, comedy shows, etc. There's no real good or bad place.