Everybody has a different response to massage - ask questions to understand people's preferences, appreciate their responses, and adapt your aftercare accordingly. Some may get cold and find all the blood rushes to their core, similar to a shock response, so a hot bath may be beneficial. You may suggest this and they haven't got a bath or find it a hideous concept. Some like to sleep, others may feel sore the day after having muscles worked on deeply. In this care reassure them that it will be like an exercise soreness and it will be gone a couple of days after receiving a massage.