Go to the MFS website, read the entry , and testing guides.
They have set physical training schemes to build you up to the exact testing they require, and undertake.
Train hard, maintain a healthy diet, study, and most of all, don't forget to still enjoy yourself.. The next few years are some of the best you will encounter.. Don't devote every minute of every day to such a program... An hour a day would be more than sufficient !
Good luck !
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