The BBC Breakfast presenter says his body had "given up" ahead of his elimination from the competition.
The deputy prime minister claimed he had "total faith" in Boris Johnson.
“It’s an honour to take the reins from Louise and be part of the UK’s most watched breakfast show," she said.
As infections soar, the presenter asked: “So your policy is working in... what respect?”
"I'll jump in, as I really don't understand what you're saying."
Strictly's Dan Walker Says Daughter Had Sweetest Reaction To First Dance: 'One Of The Highlights Of My Life'
"The dance was great... but that was what it was all about."
"We've got a Kirkwood down!"
"That's a bit unfortunate, isn't it?" observed presenter Dan Walker.
Between early mornings at BBC Breakfast and his Strictly training, Dan is already feeling "shattered", apparently.
Dan began the interview by asking if the foreign secretary had "a nice holiday".
About BBC Breakfast
'BBC Breakfast' is corporation's early morning news and current affairs programme that airs daily from 6am on BBC One and BBC News, broadcast live from Salford Quays in Manchester. It is currently hosted by a team of presenters including Louise Minchin, Dan Walker, Charlie Stayt and Naga Munchetty, as well as stand-in hosts Mike Bushell and Steph McGovern. Carol Kirkwood acts as the show's resident weather presenter, hosting her segments from BBC Broadcasting House in London. Many of journalism's biggest names have presented the show over the years, including Bill Turnbull, Susanna Reid, Natasha Kaplinsky, Sophie Raworth, Dermot Murnaghan and Sian Williams. The show attracts an average daily audience of 1.5m, which is around double that of ITV rival 'Good Morning Britain', which is fronted by 'Breakfast' alumni Susanna Reid, along with Piers Morgan and Ben Shephard.