Recently started using smelling salts,
They are awsome, right before a heavy set have a good whiff, it clears up your airways allowing bigger breaths and makes your neurons fire allowing you to recruit more muscle fibres.
Highly recommend to anyone who hasnt tried them
Ive even started using them when i wake up in the mornings now too.
Not all smelling salts are the same, there are ones for beginners so i would recommend you start with them as the stronger ones will be far too much for you to handle and ruin the experience