You need to have mongodb installed first and any Local Database to see your data
git clone https://github.com/dineshnadimpalli/Exercise-Tracker-using-MERN-stack.git
#Go to the React folder
cd Exercise-Tracker-using-MERN-stack
npm i
npm start
The frontend will now automatically run on port http://localhost:3000
#Now start the MongoDB using
mongod --dbpath
#Now go to the backend folder in the same project folder
cd backend
npm i
nodemon server (or) npm start
Now, the server will run on port 8000
Here are the sample pictures of how the app should look once you successfully clone it and run.