The 13ft-high ‘wall’ at Tower Bridge was obliterated by the tank after research revealed 72% of adults hit a wall multiple times each week. On average, Brits hit a wall twice a week and ultimately lose nearly 37 minutes of productivity when it strikes – just shy of 78 wasted hours a year.

Nearly half (45%) report feelings of fatigue during these moments, while 40% feel unmotivated, and 37% lack concentration. The research of 2,000 adults revealed others become irritable (27%) and hungry (12%) after hitting a wall.

The wall, crafted to represent the high carbs and sugar filled snacks 76% typically reach for to boost their energy, was demolished by Grenade founder Alan Barratt, driving the protein brand’s orange ‘tank’.

But while 78% acknowledge the food they are fuelling themselves with could be to blame, 52% are not confident in identifying the foods causing them to feel fatigued and lack focus.

Neal Duffy, from the protein bar brand, said: “We’re a nation of hustlers, so we need to fuel our bodies the right way. Sugar isn’t the enemy – it just needs to show up at the right time and in the right amount.”

The research also found 39% choose their snacks based on convenience rather than nutrition, although 34% are interested in learning more about nutrition and switching to smarter snacking options. Half 53% are open to trying new alternatives though, with 36% on the lookout for high protein, low sugar snacks options.

Sports nutritionist Lois Bright added: “Being more mindful about what we eat and when we eat it will help us manage our energy levels more efficiently. As a nation, we need to understand what we’re putting into our bodies and be realistic about what we’ll get out.

“Choosing drinks and snacks which are high in protein is a simple switch we can all make to ensure we have the stamina to power through our busy days.”