A monitoring system has sensors for monitoring a comfort of a user. For example, a motion sensor may detect movements as the user lies or plays in the monitoring system. The motion sensor is sensitive to detect expansion and contraction of a chest cavity, thus monitoring the user's breathing status. Other sensors may detect other environmental data, such as temperature, humidity, and even the user's voice. Collectively, the sensors may be used to infer the user's status/comfort. The monitoring system may collect the data and then infer the user's comfort. The monitoring system may also send the data to another device for analysis, such as a computer, smartphone, or even a server providing a cloud-based service.