The secret behind Kylian Mbappe's physical growth over the past years has been revealed, according to a report in Marca.
The French forward was the revelation of French football two seasons ago when he championed Monaco to the Ligue 1 title and also helped the team to the Champions League semi-finals in the 2016/17 season.
Mbappe's form attracted the interest of Paris Saint-Germain from Monaco and he has been working harder to gain the right amount of muscle in recent months so as to attain fullness at an optimum level of performance.
"Having joined one of the world's top 10 clubs, Mbappe has worked out in the manner of those at the highest level," h
"This season he has grown another centimetre.
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"But his muscular development hasn't yet finished and it won't be for another year and a half when he'll be 21 years of age.
"At that point, his upper body will naturally strengthen.
"His shoulders will expand even more.
"Mechanically, he'll gain further speed, explosiveness and even technical ability." is advisors told Le Parisien.
The French forward travels to Russia for the World Cup in an excellent form having just won the French Ligue 1 and French Cup.
Some of these secrets were revealed too, such as the fact that he has been undergoing thalassotherapy, a seawater-based treatment for the skin and he was also given rest by PSG so as to arrive at the World Cup in good condition.
France will play their opening game against Peru in the World Cup.