I have experienced exactly the same. I bought Yogi Berry DeTox and after just the second day (one cup per day) I could not sleep a minute. It kept me up all night despite that there are no stimulants (e.g. caffeine) in this version of the tea, or at least none is indicated on the label. It seems that some of us just might be sensitive to some of the ingredients.

Tropical Chamomile Tea - With its blend of chamomile, lemon myrtle and rose hips, this delicate tea is perfect as a mid-day treat or a nightcap. This calming, individually packed tea is perfect for de-stressing after a hectic afternoon or winding down at the end of the day. It has a delicate taste and a beautiful aroma that will make tea time your favorite time of day.

As a final word of caution: Select only the best brands of organic and natural detox teas. Many teas contain chemicals, heavy metals and pesticides which will negate your detox efforts. I would also like to take the opportunity to suggest that you keep changing and/or rotating your brands of detox teas as this will make your cleanse even more powerful.

Like I said in the beginning, this program stood out to me because it offered more than just tea. They had supplements and edit/workout plans to go along with the  tea! I really liked this because if you just sit on your butt all day, don’t change your eating habits and expect to lose a bunch of weight just by drinking tea, you aren’t going to like the results. Some people that have tried Skinny Bunny stopped before the 28 days was over because they already saw the results that they were looking for.
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These teas may be useful for promoting detox, but as constituted the teas are not likely to be effective for significant weight loss. Nevertheless, our research team conducted a thorough investigation on the combination of herbs present in the Yogi Detox Tea. Our findings, as well as the truth behind the effectiveness of this tea, can be found below.

This could also be because Iaso Tea itself helps us make better decisions with our health and bodies. Since we need to be eating healthy and exercising regularly to get the full benefits of the tea, we will see a lot of positive advantages from that as well. Studies have shown that people who eat healthily and exercise more often tend to be happier and report better wellbeing. 

The makers of Iaso Tea, total life changes tea, have claimed that their tea gives individuals a boost in physical energy and mental clarity as a result of the other benefits of the tea such as detoxification. This is because toxins are known to slow the body and impact the way your brain works. The tea can help restore mental clarity and deliver a decent amount of energy after you start to drink it over time. 
I added this tea to my daily diet after taking a week off from mt diet/weight loss goals after I hit a plateau. I’m a big tea drinker so I drink it several times a day just because I like it so much and it’s better than drinking plain water. I dropped all the water weight I’d gained in my week off within two days and have been steadily losing .2-..3 pounds a day since. This is combining it with a healthy, low cal, low carb, high protein diet plus exercising 3x a week. So can I say for sure that it’s the tea that made the difference? No. But I do know I’m back on track and losing again after plateauing for a while and this the only I’m doing differently than before.
Since starting my fitness revolution one of my keys to maintaining success has been to not drink my calories. This has been very difficult because most of the beverages on the market taste great, but they are chock full of calories and added sugar. Obviously we need to stay away from soda-pop but even some of the healthier choices still don't cut it.
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Samantha, yes absolutely! We don’t ever recommend “starve yourself” detoxes. There is a much healthier way to achieve great results than depriving your body of nutrients for a few days. I would recommend sticking to lighter foods though. You can detox from specific things such as sugar and carbs or you can try a smoothie/juice detox. Just try to fill up on salads and veggies rather than heavier stuff like meats during a detox. I hope that helps!