Canadian heartthrob Shawn Mendes has revealed that he's been working hard on his personal fitness and well-being for a year now, and can see great progress in how his body looks. 

The 'Stitches' hitmaker posted a progress photo via Instagram (pictured left) and explained that working out keeps him feeling mentally healthy as well as physically in shape:

"1 year (2 weeks) I've been working extremely hard this past year and I'm so happy to see good progress."

"Working out has changed my life for the best, it not only keeps me healthy and strong but it keeps me mentally straight. It does so much more for me then any type of therapy. I definitely recommend starting if you're thinking about it. Its hard work but it pays off. Im happy with my progress but theres so much more to go!"

The Vamps' James McVey, who is also an avid fan of fitness, took to his official Twitter page this morning and congratulated Mendes on his success: "Mad congrats to @ShawnMendes for this. Great work."

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Watch his music video for 'Aftertaste' here: