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In a first conditional, use if + present simple, then a modal + base verb for a possible result or advice: If you feel tired, you should take a break. Can expresses ability/permission, may possibility, must necessity and should advice. Do not normally put will in the if-clause.
/h/ in healthy is a breathy sound without vocal-cord vibration; do not add a vowel before it. /r/ in routine is voiced; the tongue does not tap the roof of the mouth as in some Vietnamese sounds. Say healthy habits and regular routine slowly, then naturally.