Chelsea defender Thiago Silva has been asked to compare the Premier League with Serie A and Ligue 1.
The former PSG captain and AC Milan defender is in his first season in England at the age of 36.
He said at a Brazil team media conference: “I had a big apprenticeship in Italy. In my opinion, this is one of the best schools for defenders.
"Then there is the French championship, which is a little more physical and a little stronger. Even if PSG has a strong domination over its opponents, we played in a more exposed way because we had to take risks.
"As for the English league, after the two matches that I played, it gives me a headache. It's aerial play at all times, a very high pace of play."