A computer-implemented method adapted to determine one or more period of inactivity of a subject, the computer-implemented method comprising: receiving, by logic communicatively coupled with a first sensor that is adapted to detect activity in a first area, the first area comprising a sleeping area, a first set of one or more signals indicative of detected activity of the subject within the first area; identifying, by the logic, based on the first set of one or more signals received from the first sensor, a first point in time after cessation of the detected activity within the first area by a predetermined time interval; storing, by the logic based on the identifying, a first indication that signifies a transition of the subject into a first state at the first point in time, wherein the first state is a sleep state; receiving, by the logic communicatively coupled with a second sensor (110, 114) that is adapted to detect activity in a second area (108, 112) that is different than the first area, a second set of one or more signals indicative of activity within the second area; identifying, by the logic, based on the second set of one or more signals received from the second sensor, a second point in time that is after the first point in time; determining, by the logic, whether the first sensor provided any signals indicative of activity detected in the first area within a second time interval immediately preceding the second point in time: if the first sensor provided any signals indicative of activity detected in the first area within the second time interval immediately preceding the second point in time, storing, by the logic, a second indication that signifies a transition of the subject into a second state, wherein the second state is an awake state; and if the first sensor did not provide any signals indicative of activity detected in the first area within the second time interval immediately preceding the second point in time, refraining from storing, by the logic, the second indication that signifies a transition of the subject into the second state. receiving, by logic communicatively coupled with a first sensor that is adapted to detect activity in a first area, the first area comprising a sleeping area, a first set of one or more signals indicative of detected activity of the subject within the first area; identifying, by the logic, based on the first set of one or more signals received from the first sensor, a first point in time after cessation of the detected activity within the first area by a predetermined time interval; storing, by the logic based on the identifying, a first indication that signifies a transition of the subject into a first state at the first point in time, wherein the first state is a sleep state; receiving, by the logic communicatively coupled with a second sensor (110, 114) that is adapted to detect activity in a second area (108, 112) that is different than the first area, a second set of one or more signals indicative of activity within the second area; identifying, by the logic, based on the second set of one or more signals received from the second sensor, a second point in time that is after the first point in time; determining, by the logic, whether the first sensor provided any signals indicative of activity detected in the first area within a second time interval immediately preceding the second point in time: if the first sensor provided any signals indicative of activity detected in the first area within the second time interval immediately preceding the second point in time, storing, by the logic, a second indication that signifies a transition of the subject into a second state, wherein the second state is an awake state; and if the first sensor did not provide any signals indicative of activity detected in the first area within the second time interval immediately preceding the second point in time, refraining from storing, by the logic, the second indication that signifies a transition of the subject into the second state. if the first sensor provided any signals indicative of activity detected in the first area within the second time interval immediately preceding the second point in time, storing, by the logic, a second indication that signifies a transition of the subject into a second state, wherein the second state is an awake state; and if the first sensor did not provide any signals indicative of activity detected in the first area within the second time interval immediately preceding the second point in time, refraining from storing, by the logic, the second indication that signifies a transition of the subject into the second state.