$a^{|b-a|}+b^{|c-b|}+c^{|a-c|} > \frac52$ for $a,b,c >0$ and $a+b+c=3$ 
Let $a,b,c >0$ with $a+b+c=3$. Prove that
$$a^{|b-a|}+b^{|c-b|}+c^{|a-c|} > \frac52.$$

What I did:
It is cyclic inequality so I assume $c= \min\{ a,b,c \}$.
I consider the first case where $a\ge b\ge c$ then
$$a^{|b-a|}+b^{|c-b|}+c^{|a-c|} > \frac52$$
$$\Leftrightarrow \frac{a^a}{a^b} +\frac{b^b}{b^c}+\frac{c^a}{c^c}> \frac52$$
I check function $f(x) =x^x$ to see if it is a strictly monotonic function or not. It turns out that it is a concave up function so I get stuck here.

Perhaps it would help to take $a=1+x$, $b=1+y$, $c=1+z$, so that $x+y+z=0$
Now the inequality looks like:
$$(1+x)^{|y-x|} + (1+y)^{|z-y|} + (1+z)^{|x-z|} \geq \frac{5}{2}$$
Using bernoulli's inequality, the expression is more or less
$$1 + x|y-x| + 1 + y|z-y| + 1 + z|x-z| \geq \frac{5}{2}$$
$$x|y-x| + y|z-y| + z|x-z| \geq \frac{-1}{2}$$
And we can split it in two cases depending on how x, y and z are sorted.
For example, if $x<y<z$, we must prove that:
$$x(y-x) + y(z-y) + z(z - x) = -x^2 - y^2 + z^2 + xy + yz - xz \geq \frac{-1}{2}$$
We recall that $x+y+z=0$, and thus $z = -x-y$:
$$-x^2 - y^2 + z^2 + xy + yz - xz = -x^2 - y^2 + x^2 + y^2 - 2xy + xy - (y+x)(y-x) = x^2 - y^2 - xy$$
It should not be hard to check if this is more that $\frac{-1}{2}$ given our restraints. 
