I started running seriously not long ago, and every time I finish a session, the next day I get brutal muscle soreness that lasts almost a week. Is that normal at the beginning, or am I doing something wrong with my technique?
It's pretty normal at first because your body isn't used to the effort, but a week of really strong pain suggests you're probably doing too much too fast. I'd recommend lowering the intensity and distance in the first few weeks, taking more rest days between runs, and not increasing your volume more than 10% each week - something most beginner runners don't stick to. Also pay attention to whether you're warming up properly before and stretching after, because that helps a lot with reducing soreness.
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