He is due to return for 12 new Doctor Who audio adventures in 2022.
And Christopher Eccleston was spotted looking fit and healthy as he displayed his muscular biceps in a black vest on Wednesday.
Looking good: Doctor Who star Christopher Eccleston was spotted looking fit and healthy as he displayed his muscular biceps in a black vest on WednesdayInsurance Loans Mortgage Attorney Credit Lawyer
The two-time BAFTA Award nominee donned a buzz cut as he pounded the pavement.
The Ninth Doctor Adventures will be produced by Big Finish and follow Christopher's Doctor before the 2005 series.
He took on the role of the Doctor during the first season of the much loved sci-fi series.
The adventures will release in four box sets released throughout 2022 and 2023 as CDs, digital downloads, or limited edition vinyl LPs.
He's back! The Doctor Who alum, 57, -who is ready to reprise the role of the ninth Doctor for an audiobook - sported lycra bicycle shorts while out for a jog around North London
In an announcement on the official Doctor Who website Christopher said: 'Just before Christmas in 2020, I walked into a small recording studio in an industrial estate in North London.
'Me and the sound engineer looked at each other and we smiled and say, ‘Let’s go!’ Then I started playing the Ninth Doctor again, and I loved it.
It’s been one of the great joys for me of the past year. It’s a lovely way to do it, so I’m coming back to record more.'
Christopher left the role of Doctor Who after appearing for just one series in 2005, despite being praised by fans for her performance as the Time Lord.Insurance Loans Mortgage Attorney Credit Lawyer
Honest: Christopher left the role of Doctor Who after appearing for just one series in 2005, despite being praised by fans for her performance as the Time Lord, as he battled anorexia
The series gripped viewers with the return of the infamous Daleks, the debut of Captain Jack (played by John Barrowman) and the Doctor's blossoming romance with Rose Tyler.
But the end of series one saw Christopher's Doctor regenerate, with David Tennant taking over the role for the second series in 2006.
Since his departure, the actor has candidly revealed that he battled anorexia during filming for the