Beyonce is helping U.S. First Lady Michelle Obama celebrate the fifth anniversary of her Let's Move fitness campaign by filming a short exercise video to encourage fans to stay in shape.

President Barack Obama's wife first recruited the Drunk In Love hitmaker to front the drive in 2010, hoping her involvement would serve to drive kids to get active and fight childhood obesity, and now Beyonce has stepped up to mark five years since the initiative's launch with the #GimmeFive movement, calling on devotees to perform five physical tasks or share five ways to be healthy and then challenge others to do it, too.

She filmed herself performing a series of work-outs, including leg lifts, lunges and punching with weights, and uploaded the time-lapse clip to her social networking pages on Wednesday (25Feb15).

She captioned it, "Celebrating 5 years of the Let's Move Initiative. ‪#‎GimmeFive‬ Michelle Obama".

The First Lady reposted the video on Twitter, writing, "Rt (retweet) if you're ready to work out with @Beyonce! #GimmeFive of your workout drills (or you'll disappoint the Beygency (Beyonce fanbase))."

Obama also challenged American Idol host and radio personality Ryan Seacrest to complete five burpees, which he successfully completed, before calling on pop star Nick Jonas to take part in the campaign.

Responding on Twitter.com, Jonas writes, "I accept the challenge. I'll post a video, just let me warm up a bit."

Actor-turned-Tv presenter Mario Lopez and singer/songwriter Jack Johnson have also pitched in, sharing their tips and activities via social media.