Try this one then RavenZ.
Find a hill of about 8% gradient and about 12 miles long.
Cycle steady up it for twenty minutes ir so.
After 20 minutes, reach down and grab your bidon, take a swig.
Replace your bidon and then go hunting in a back pocket for a pack of energy gel. Open the pack ( two hands required ) and gulp down the contents.
Put the empty pack in your back pocket.
Take another swig from your bidon.
Remember - this is while climbing an 8%.
A light touch is all that's needed, except some cyclists haven't got control.