We advise gifting fitness-oriented gifts only to those you know well - and then, only to those who've clearly expressed interest. These are the kinds of gifts that can go awry. Running shoes for the wife? A yoga mat for the new bestie? Tread carefully. However, for the fitness geeks in your life you know will appreciate, it doesn't get much better than Carbon38. Shop their curated selection of gorgeous workout wear and know your gym junkie friends will thank you.