Our reporters have teamed up with fitness experts to design dozens of routines. Try something new — and build an exercise habit that sticks.

So you’ve been lifting, running, or training for a while, and you’ve asked yourself: Do I need to change my routine every few weeks? Some people swear by “muscle confusion,” while others say ...

The New Year can be a great time to kick-start a new fitness routine or to take one already underway to the next level. The best way to get started is to set realistic challenges that can be easily ...

Nick Blackmer is a librarian, fact-checker, and researcher with more than 20 years of experience in consumer-facing health and wellness content. Tweaking an exercise routine you’ve done for a while ...