Day 2 completed! Loving this function on TicWatchE3. #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 3 of 21. I will be sleeping well tonight.

Day 4 of 21. Burn baby burn 💪#hiitchallengewithTicWatchE3 Mobvoi_Official

Day 5 of 21. My fitness must be getting better. I have to work harder to get my heart rate up. #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 6 of 21. Happy Sunday everyone! 😉 #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 7 of 21. Completed 1 week of HIIT! My body don't feel sore. It's amazing how the body strengthens and recovers. #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 8 of 21. Go go go! #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 9 of 21. First day back to work. Ending the day with HIIT! #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 10 of 21. 😉 Stay strong! #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 11 of 21. Getting ready for the weekend 🤗 #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 12 of 21. Feeling a bit tired today. Will try harder tomorrow 😉 #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 13 of 21. 😏 Keep it up! #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 14 of 21. Feeling great today! 💪 #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 15 of 21. Another day, another HIIT. 😉 #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 16 of 21. Work out before work. The burst of energy is a good way to start the day. #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 17 of 21. 😉 #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 18 of 21. I'm feeling proud of myself. 👍#hiitchallengewithTicWatchE3 Mobvoi_Official

Day 19 of 21. Feeling good after a HIIT session 🙂 #hiitchallengewithTicWatchE3 Mobvoi_Official

Day 20 of 21. Wow...I'm almost at the end. It's been a great challenge! #hiitchallengewithTicWatchE3 Mobvoi_Official

21 days of HIIT completed! It has been challenging but well worth it. 😄 #hiitchallengewithTicWatchE3 Mobvoi_Official