It’s cool if you check email or answer the phone during your workout, right? Nope. Don’t do it. It wrecks your focus and productivity, says Muelrath, plus your relationship with your trainer is a professional one—you need to treat it as such. At the same time, though, you should hold your trainer accountable too. So if you find that he or she is off-task or distracted, don’t be afraid to address their commitment to you. Your trainer should not be texting or constantly chatting with other trainers or gym-goers. Period.