Watford boss Paulo Pezzolano says that he will "never allow" a lack of energy from his side following their 2-1 EFL Cup loss to Norwich City on Tuesday.
The Hornets clawed one back in the second half through Kwadwo Baah but were unable to overcome a two-goal deficit from the opening 24 minutes.
"The lack of energy that we will never allow, it's something basic we all need to have in life," Pezzolano told BBC Radio 3CR.
"We want to keep what we saw in the second half, we want to be that team.