This week: How long can someone hold their breath and can you train for this? Who are fitter - footballers or rugby players? And what's the most intelligent insect? We've assembled an expert panel to take on your science questions - University of York animal behaviour scientist Eleanor Drinkwater, exercise physiologist Dan Gordon from Anglia Ruskin University, Cambridge University physicist Fran Day, and Cambridge University mathematician and University Challenge icon Bobby Seagull! For information regarding your data privacy, visit acast.com/privacy