High TSH with normal T3 T4. As well.

Greetings of the day! Recently my wife and me got complete body test. All normal, even T3 and T4 are normal for both of us, but TSH for both of us came near 8.84 units. Although we have completely different body situation, we were diagnosed with same problems, can it be because of a common wrong habit of living, what it can be, how we can improve TSH level. Also at the time of test we both had common cold, can it have some effect in the test. At present our lifestyle is simple, 8hrs teacher job in a gulf country. After that watch movies, reading, take rest, 7 to 8 hr sleep. But yes quality of sleep is not so good, some time I feel like exhausted in mornings as well. Thank you in advance for your kind suggestions.