Jeremy Corbyn was spotted working up a sweat as questions remain over his ability lead the country.
The Labour leader looked to be feeling the strain as he and his wife, Laura Alvarez, exercised near his home in Islington.
After jogging through a park in north London, he was left with pools of sweat drenching his T-shirt.
Jeremy Corbyn was pictured running (left) in a north London park in Islington before working out at an outdoor gym (right)
Mr Corbyn and his wife, Laura Alvarez, took to the park to exercise today amid questions over his fitness to lead
But the 70-year-old didn’t stop there and used outdoor gym equipment under the blazing sun.
Ms Alvarez struggled to keep up with her husband and even resorted to cutting corners to keep pace with him.
The left-winger was seen warming up for his workout outside a cafe before heading out.
It comes after Liberal Democrat leader Jo Swinson said that Mr Corbyn is not fit to be prime minister.
Speaking two days ago, she reiterated her belief that he should not lead a National Government of Unity if Boris Johnson is ousted.
She told the Guardian that Mr Corbyn has totally failed to eradicate antisemitism from Labour.
Jeremy Corbyn is pictured running through the park in North London with his wife this afternoon
The opposition leader is pictured drenched in sweat after a tough workout in a north London park this afternoon
The Islington North MP also faced criticism from across the water, as US President Donald Trump was warned that he could leak classified information.
A think tank told the president that Mr Corbyn could pass intelligence to Russia and Iran if he ever becomes prime minister.
Analysis of the Labour leader’s attitudes towards the Kremlin has prompted a report warning Mr Trump to be wary if he is elected.
Mr Corbyn was spotted stretching at a nearby cafe before he and his wife embarked on a run around the park in Islington
It says that Britain’s NATO membership could be ‘downgraded’ in an effort to avoid state secrets being spilled.
The report could make relations between the two men even worse, after last month Corbyn blasted Trump for supporting Boris Johnson’s decision to suspend parliament.
He said Trump preferred Johnson because he makes a ‘compliant prime minister’ who would hand Britain’s public services to US corporations in a free trade deal.
Trump said it would be hard for the Labour leader ‘to seek a no-confidence vote against New Prime Minister Boris Johnson, especially in light of the fact that Boris is exactly what the UK has been looking for’.
In retaliation, Mr Corbyn tweeted: ‘I think what the US president is saying, is that Boris Johnson is exactly what he has been looking for, a compliant prime minister who will hand Britain’s public services and protections over to US corporations in a free trade deal.’
The row erupted after Boris Johnson’s plan to suspend Parliament for five weeks starting on 9 September was given the Queen’s blessing.