algunas de las opiniones:

As a privateer professional rider I can tell you this is the most physically/mentally demanding sport there is. These pro races are 30min plus with your heart rate ranging from a low of 165 and max of 200 or maybe even more depending on the rider. To be able to sustain that max heart rate you must dedicate everything to your training on and off the track. From diet to riding to training everything must be at a 100 percent and these riders put their life on the line every single time they swing a leg over the bike. There's no time outs, no breaks, nothing just racing.M+89
What people have to realize if you want to be good at any sport you have to be ready to work for it. But, what people don't realize to be great you have to go places most people don't want to go. I am a tennis coach and for this sport you have got to put in the hours to be great. You also have to do the right exercises to get the most out your game. With that being said I raced dirtbikes in the late 90's and early 2000's, there is absolutely nothing that asks more out of you than motocross. Not only do you have to be in the best physical shape to control your every move, you have to be in the best physical shape to control a 230 lbs machine that cranks out 60hp trying to rip your arms off. Yes these bikes have 14 inches of travel on the shock absorbers, but for the these 30 foot high big air jumps what takes care of the rest of the fall? Your legs! If you know anything about physical training you would know that at 180-200 hb/m (for twenty minutes) these guys are working. Now I'm sure ...moreM+38
Motocross by far. Swimming is physical but you don't over heat. Soccer is cardio but the game stops ever few seconds/minutes. Motocross is 20 minutes plus of nonstop, over heated, fear of getting seriously hurt, hold on for your life, 52 horsepower fighting fun. Try it and tell me its not hard.M+41
Very physically demanding sport as I compete and is hard

cierto, aparte de esa publicacion lei que los 2 deportes mas duros eran el mundial de futbol y el supercross. Vete y cuenta por ahi que el MX es el deporte mas duro o uno de los mas duros y escucharas al ag ente reir...

Si, todo el que lo desconoce y no ha entrado nunca en circuito de motocross. Una pena. Hay que implantar que den motocross en la escuela primaria 😀 😀 😀