Justin Bieber works hard to maintain his toned body.

On Wednesday, Bieber, 25, was spotted working out at the gym without his wife, Hailey Baldwin. The "Love Yourself" singer went shirtless for his exercise routine, showing off his lean but muscled form and numerous tattoos in photos obtained by Daily Mail.

For his workout, Bieber opted to wear only black gym shorts, which sagged a little to reveal his white Calvin Klein underwear. He paired the shorts with white New Balance sneakers and socks.

Photos from the sighting showed a glimpse of Bieber's massive bear tattoo under his right shoulder which he debuted back in 2017. Fans can also catch a glimpse of the two angels inked on the singer's torso, along with the church-style motif. Bang Bang, who did the ink, once described it as "symbolic of Gothic art and the struggle between the light and dark, the good and the evil, Yin and Yang."

Meanwhile, Bieber's wife, Hailey Baldwin, had also been spotted out and about on the same day. The model rocked a baby blue trenchcoat, dark sunglasses and silver earrings as she headed to a studio for a photo shoot.

The couple's latest sighting comes a day after news surfaced that they are pushing back their wedding once more. Though the two officially tied the knot in a courthouse back in September, Bieber and Baldwin reportedly wanted to hold another ceremony, this time with their families and friends present.

However, a source told People this week that Bieber and Baldwin are prioritizing the singer's health over their wedding plans for now.

"Hailey keeps supporting him. They will still have a wedding when they feel they are ready," the insider dished. "The most important thing for them is that Justin is mentally healthy."

According to the source, the "Sorry" hitmaker reportedly needs a break as he gets "stressed out" and pressured when he "starts thinking too far ahead."

Bieber has been getting treatment for his personal struggles, including anxiety and depression, over the past several months.

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Justin Bieber and wife Hailey Baldwin spotted out in West Hollywood together. Justin Bieber and Hailey Baldwin seen on the streets of Brooklyn on September 14, 2018 in New York City. Getty Images/James Devaney