Overall goal is to use GNSS as an support for IMU to track whole body movements in the wild, for healthcare and wellness applications. The GESTUS proposal aims to address a clear need of movement workers, physicians, physical therapists, and athletic trainers. The need is to have a tool that allows for highly accurate tracking of the kinematics of the human body, for the entire duration of the activity. GESTUS proposes a solution based on the integration of GNSS and IMU within ad-hoc wearable devices, which allow for high accuracy for a long duration of time in the real environment. The solution then consists of an ad-hoc created data processing algorithm and a cloud platform, with associated communication infrastructure, to automate sensor management, data downloading, processing itself, and results fruition, analysis and sharing. The project and the solution it proposes is primarily aimed at remote monitoring of patients with, or potentially affected by, degenerative and neurological diseases such as multiple sclerosis or Parkinson's. In such patients, it is very important to monitor with great accuracy the movements of every part of the body, both for possible early diagnosis and to monitor the evolution of the disease, to evaluate the effect of ongoing treatments, and to plan in advance actions to mitigate symptoms.