A tough leg day may have an unexpectedly simple boost: the smell of chocolate. According to a new study published in Frontiers in Physiology, exposure to chocolate aromas before and during resistance exercise helped participants complete more repetitions without making the workout feel more difficult.

[...] "Sniffing a 90% dark chocolate odor added about 18 more repetitions to participants' leg extensions, while a 60% milk chocolate odor added about nine repetitions compared to the water control," said Nashrudin Naharudin.

— Read more in Smelling chocolate helped men complete more reps without feeling more tired at ScienceDaily.