This is the date of the first Olympic Games.
This was to make better soldiers.
These were created to make more ways for the boys/men to get fit.
Once the Greeks wanted more power, they realized they would need to conquer other places which resulted in them having higher physical education values so their soldiers would be good enough to achieve their dream of power.
Gymnasiums were created in schools.
Militarism involved lots of intense training such as horsemanship, running, fencing, boxing, archery, etc.
This is when it became popular in the US.
This is when the "ladder" was first used as a speed training work out.
This is when aerobics really became popular in the US.
The Cross Fit company began in 2000.
This is when the first artificial sweetener, saccharin was discovered.
This is when one of the first diet pills called dinitrophenol was invented.
This is when the procedure was invented.
Fad diets became popular in the 80's.
This is the date it was established.
Became popular in the 30's.
These became popular during the War on Cancer because people were looking for anticancer remedies in plants.
This is when one of the first legal energy drinks came out.