Fellow preloaders - new to the role, only been loading 3 trucks for 4 days now. Although I've been told I'm doing a good job, about two-thirds of the way through the shift I really hit the wall and get very tired and the boxes pile up quicker than I can load them. The guy next to me suggested I eat some snacks for energy, so I wondered what other preloaders recommend for snacks to provide an energy boost? I eat a granola bar before my shift starts every day but obviously it's not enough! Thanks in advance for your input!