'Don't teach maths or physics to kids on Thursdays'

"Children have their own bio-rhythms and Thursday is the hardest day of the week," RIA Novosti quoted Gennady Onishchenko as telling the Ekho Moskvy radio station in an interview.

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"Therefore, it is not recommended to teach difficult subjects like mathematics and physics on Thursdays because those subjects require a heavier load on the brain," he said.

The doctor said there are special conditions in school scheduling and that parents should know about them. Parents should also take a more active role in curriculum planning to cut down on excessive mental load on children.