A fitness expert at Lifetime in New York City provided the below targets for how long you should be able to hold a plank by age. 20s: 1 to 2 minutes 30s: 1 to 2 minutes 40s: 1 minute or longer 50s ...

The challenge also has a fundraising goal, and while it was initially set to $500, the trend has raised more than $190,000 for Active Minds, and its target is now $250,000. As the trend has been ...