Avoid gym separation anxiety and get your workout in your room. Flex-bands are lightweight and take up no room in your suitcase. Pack one or two for a nice maintenance workout.
Don't forget to use your own body weight. What did those neanderthal-body builders do before Olympic weight plates?
Push ups - Sit ups - Squats
Trust me, you won't have the time, energy, or facilities to stick to your usual routine, but don't be discouraged. Instead, set a target that you can achieve...even when totally wiped out from travel...and remember that anything is still better than nothing.
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