“Even if you don’t have time to shower after a workout doesn’t mean you should forgo daily exercise. While sweating is a sign your body temperature is rising, sweat isn’t always necessary for an amazing workout. You can boost your energy and tone your muscles without even moving though isometric exercises — they contract your muscles while you stay in one stead position. The longer you hold each position, the more muscle fibers you recruit, thereby intensifying your workout while still leaving you sweat-free.
So the next time you’re in a rush (and without access to a shower and clean change of clothes!), try these moves.”
Source: 5 Workout Moves For When You Don’t Have Time To Shower, MINDBODYGREEN