Lazy Football Players?

For the first time since the start of the World Cup, there are no games on this afternoon or evening. The football players are all well paid professional players, but it is said they need to rest for several days between each game. This is unheard of in many other sports. Look at tennis, where the Grand Slam tournament in Wimbledon is played now, the players there have a maximum of one day's rest between each game. It is similar with ice hockey. In Tour de France, which starts soon, the professional bicycle riders are competing every day for much longer than the ninety minutes that a football game goes on. I think the football players should be able to play games with fewer days of rest in between. It would enhance the interest during the last days of the World Cup, I believe. Maybe football players are just too lazy to do this, or is it I who cannot understand the hardship of playing ball for ninety minutes?