Laura's grandmother wants to increase her activity levels, but she doesn't have a computer or regular access to a gym. which technology would be most practical for her to improve her physical health?

A pe dometer is a device, usually portable and electronic or electro mechanical, that counts each step a person takes by detecting the motion of the person's hands or hips. Because the distance of each person's step varies, an informal calibration, performed by the user, is required if presentation of the distance covered in a unit of length (such as in kilometers or miles) is desired

Maybe it is yoga , stretches, push ups, sit up etc