I think it might be, it's not a status I've ever had on mine but I have had overreaching and mine does like to tell me I'm unproductive occasionally
This is from the Garmin website...sounds exactly like where Kels is
- Strained: Your performance ability is currently limited with inadequate recovery as a probable cause. This can occur, for example, during periods of unusually high training load. Alternatively, health and lifestyle factors may be interfering with your ability to bounce back from strenuous activities. Consider taking it easy until your body catches up.